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addcslashes> <Strings
Last updated: Fri, 18 Jul 2008

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String Funzioni

Vedere anche:

For even more powerful string handling and manipulating functions take a look at the POSIX regular expression functions and the Perl compatible regular expression functions.

Indice dei contenuti

  • addcslashes — Esegue il quoting di una stringa con gli slash nello stile del C
  • addslashes — Esegue il quoting di una stringa con gli slash '/'
  • bin2hex — Converte i dati binari nella rappresentazione esadecimale
  • chop — Alias di di rtrim
  • chr — Restituisce un carattere specifico
  • chunk_split — Divide una stringa in segmento più piccoli
  • convert_cyr_string — Converte da un set di caratteri Cirillico ad un'altro
  • convert_uudecode — Decodifica una stringa codificata con uuencode
  • convert_uuencode — Codifica uuencode di una stringa
  • count_chars — Restituisce informazioni sui caratteri usati in una stringa
  • crc32 — Calcola il crc32 polinomiale di una stringa
  • crypt — Criptazione di una stringa a senso unico (hashing)
  • echo — Visualizza una o più stringhe
  • explode — Suddivide una stringa
  • fprintf — Scrive una stringa formattata in uno stream
  • get_html_translation_table — Restituisce la tabella di decodifica utilizzata da htmlspecialchars e htmlentities
  • hebrev — Converte il testo logico Ebraico in testo visuale
  • hebrevc — Converte il testo logico Ebraico in testo visuale con conversione del carattere di 'a capo'
  • html_entity_decode — Converte le entità HTML nei corrispondenti caratteri
  • htmlentities — Converte tutti i possibili caratteri in entità HTML
  • htmlspecialchars_decode — Convert special HTML entities back to characters
  • htmlspecialchars — Converte i caratteri speciali in entità HTML
  • implode — Unisce gli elementi di una matrice in una stringa
  • join — Alias di di implode
  • lcfirst — Make a string's first character lowercase
  • levenshtein — Calcola la distanza Levenshtein tra due stringhe
  • localeconv — Ottiene informazioni sul formato numerico
  • ltrim — Rimuove gli spazi (o altri caratteri) dall'inizio di una stringa
  • md5_file — Calcola l'hash md5 del file dato
  • md5 — Calcola il valore md5 di una stringa
  • metaphone — Calcola la chiave metaphone di una stringa
  • money_format — Formattazione di un numero come stringa monetaria
  • nl_langinfo — Ricava informazioni sulla lingua e le impostazioni locali
  • nl2br — Inserisce il tag HTML di 'a capo' prima di tutti i caratteri di 'a capo' della stringa
  • number_format — Formatta un numero con i grupppi delle migliaia
  • ord — Restituisce il valore ASCII di un carattere
  • parse_str — Suddivide una stringa in variabili
  • print — Visualizza una stringa
  • printf — Visualizza una stringa formattata
  • quoted_printable_decode — Converte una stringa 'quoted-printable' in una stringa a 8 bit
  • quotemeta — Quota i meta caratteri
  • rtrim — Rimuove gli spazi (ed altri caratteri) dalla fine della stringa
  • setlocale — Imposta i parametri di localizzazione
  • sha1_file — Calcola l'hash sha1 di un file
  • sha1 — Calcola l'hash sha1 di una stringa
  • similar_text — Calcola la similitudine tra due stringhe
  • soundex — Calcola la chiave soundex di una data stringa
  • sprintf — Restituisce una stringa formattata
  • sscanf — Analizza l'input da una string in base al formato
  • str_getcsv — Parse a CSV string into an array
  • str_ireplace — Versione insensibile alle miuscole/minuscole di str_replace
  • str_pad — Riempie una stringa con un'altra stringa portando la prima ad una lunghezza pre-determinata
  • str_repeat — Ripete una stringa
  • str_replace — Sostituisce tutte le occorrenze della stringa cercata con la stringa di sostituzione
  • str_rot13 — Esegue la trasformazione rot13 di una stringa
  • str_shuffle — Mischia una stringa in modo casuale
  • str_split — Converte una stringa in una matrice
  • str_word_count — Restituisce informazioni sulle parole utilizzate in una stringa
  • strcasecmp — Confronto non sensibile alle maiuscole e sicuro con i dati binari
  • strchr — Alias di strstr
  • strcmp — Confronto tra stringhe affidabile con dati binari
  • strcoll — Confronto tra stringhe basato sulle impostazioni locali
  • strcspn — Trova la lunghezza del segmento iniziale che non soddisfa una maschera
  • strip_tags — Rimuove i tag HTML e PHP da una stringa
  • stripcslashes — Rimuove gli slash aggiunti con addcslashes
  • stripos — Trova la prima occorrenza in una stringa senza distinzione tra maiuscole e minuscole
  • stripslashes — Rimuove gli slash aggiunti con addslashes
  • stristr — Versione insensibile alle maiuscole/minuscole di strstr
  • strlen — Restituisce la lunghezza di una stringa
  • strnatcasecmp — Versione insensibile alle maiuscole/minuscole di confronto tra stringhe tramite l'algoritmo dell"ordine naturale"
  • strnatcmp — Confronto tra stringhe con l'algoritmo dell' "ordine naturale"
  • strncasecmp — Confronto sicuro con i testi binari, insensibile alle lettere maiuscole/minuscole sui primi n caratteri
  • strncmp — Confronto tra stringhe sui primi n caratteri, sicuro con i dati binari
  • strpbrk — Ricerca in una stringa uno qualsiasi dei caratteri di un dato set
  • strpos — Trova la posizione della prima occorrenza di una stringa
  • strrchr — Trova l'ultima occorrenza di un carattere in una stringa
  • strrev — Inverte una stringa
  • strripos — Trova la posizione dell'ultima occorrenza di una stringa in un'altra indipendentemente dalle lettere minuscole/maiusole
  • strrpos — Trova la posizione dell'ultima occorrenza di un carattere in una stringa
  • strspn — Trova la lunghezza di un testo che corrisponde alla maschera data
  • strstr — Trova la prima occorrenza di una stringa
  • strtok — Suddivide una stringa in token
  • strtolower — Converte in minuscolo una stringa
  • strtoupper — Converte in maiuscolo una stringa
  • strtr — Traduce certi caratteri
  • substr_compare — Confronto tra due stringhe a partire da una data posizione per n caratteri, sicuro con i dati binari e, opzionalmente, senza distinguere tra lettere maiuscole e minuscole
  • substr_count — Conta il numero di occorrenze di un segmento di stringa
  • substr_replace — Sostuisce una porzione di testo
  • substr — Restituisce parte di una stringa
  • trim — Rimuove gli spazi (ed altri caratteri) all'inizio e alla fine di un testo
  • ucfirst — Converte in maiuscolo il primo carattere del testo
  • ucwords — Converte in maiuscolo il primo carattere di ogni parola di una stringa
  • vfprintf — Scrive una stringa formatta in un flusso
  • vprintf — Visualizza una stringa formattata
  • vsprintf — Restituisce una stringa formattata
  • wordwrap — Divide una stringa ad un certo numero di caratteri utilizzando il carattere di divisione


addcslashes> <Strings
Last updated: Fri, 18 Jul 2008
 
add a note add a note User Contributed Notes
String Funzioni
kriskra at gmail dot com
04-Aug-2008 01:10
In reference to Moe... best random string function
<?php
function random_string($l = 10){
    $c = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxwz0123456789";
    for(;$l > 0;$l--) $s .= $c{rand(0,strlen($c))};
    return str_shuffle($s);
}
?>
Salomon
28-Mar-2008 11:43
If you want to indent a block of text with $level tabs, you can use

function str_indent($level, $text) {
    return str_repeat("\t", $level).str_replace("\n", "\n".str_repeat("\t", $level), $text);
}
Verdauga
20-Mar-2008 03:06
Just a note in regards to bloopletech a few posts down:

The word "and" should not be used when converting numbers to text.  "And" (at least in US English) should only be used to indicate the decimal place.

Example:
1,796,706 => one million, seven hundred ninety-six thousand, seven hundred six.
594,359.34 => five hundred ninety four thousand, three hundred fifty nine and thirty four hundredths
geek dot de at gmail dot com
07-Jan-2008 12:18
This took me quite some time to figure out and it is so obvious. So, I hope it helps someone out there like it would have helped me if I would have found it on this page:

I wanted to read a binary file and write it out with some modified bytes with their hex values. The easiest way I could come up with was the following:

read the file line by line, e.g. 400 bytes and then chuck it into an array with e.g.

<?php
$handle = @fopen("/path/to/file.bin", "r");
if ($handle) {
    while (!feof($handle)) {
        $buffer[] = fgets($handle, 400);
    }
    fclose($handle);
    $buffer[0][0] = chr(hexdec("FF")); // set the first byte to 0xFF
}
// write out the file from the array ...
?>

One could write a function for that, so that One can write a string of bytes. Don't have time for this now but you should get the idea.
m
27-Jul-2007 02:10
Regarding the code for the function beginsWith($str, $sub), I found that it has problems when only one character is present after the string searched for. I found that this works better instead:

<?php
function beginsWith($str, $sub) {
    return (strncmp($str, $sub, strlen($sub)) == 0);
}
?>
Moe
10-Jul-2007 03:44
In responce to mike here is a better random string function

<?php
    function random_string($max = 20){
        $chars = "abcdefghijklmnopqrstuvwxwz0123456789_";
        for($i = 0; $i < $max; $i++){
            $rand_key = mt_rand(0, strlen($chars));
            $string  .= substr($chars, $rand_key, 1);
        }
        return str_shuffle($string);
    }
?>
mike &#34;eyes&#34; moe
18-Jun-2007 02:59
Here is a truly random string generator it uses the most common string functions it will work on anywhere.

<?php
    function random_string($max = 20){
        $chars = explode(" ", "a b c d e f g h i j k l m n o p q r s t u v w x y z 0 1 2 3 4 5 6 7 8 9");
        for($i = 0; $i < $max; $i++){
            $rnd = array_rand($chars);
            $rtn .= base64_encode(md5($chars[$rnd]));
        }
        return substr(str_shuffle(strtolower($rtn)), 0, $max);
    }
?>
bloopletech at gmail dot com
23-May-2007 03:05
[Editor's Note: Remember that number names are locale-specific. Thus in the US 1,000,000,000 is called a billion, while in other countries this might be different (ie. miljard in Dutch). This function provides support only for the US locale]

If you want to convert a number, (int or float) to full spoken text, then you can use my num2text converter, at http://bloople.net/num2text

Examples:
40000 => forty thousand
1,796,706 => one million, seven hundred and ninety-six thousand, seven hundred and six.

If works for positive an negative integers/floats/doubles. The code is only a page long, and you don't have to install any modules or anything.

I hope this comes in handy for somebody!
benjamin at webbutvecklarna dot se
26-Mar-2007 02:23
An update to admin at fivestarbuy dot com's StrParse. Since php5.2.x the occurance of an object in the vardata will cause a "Catchable fatal error". Previously it has failed silently, so I added nullification of present objects.
I also updated comments to be more specific, I hope that's ok with you, admin at fivestarbuy dot com:

<?php
function StrParse($str,$vardata) {

# Variables present in $str is replaced by values of variables in $vardata
# typical use:
# $vardata = get_defined_vars();
# $str = some template code with variables present.
# uncomment the echo line to debug.

$getvarkeys=array_keys($vardata);
$ret=$str;
for ($x=0; $x < count($getvarkeys); $x++) {
   $myvar=$getvarkeys[$x];
   if(is_object($vardata[$myvar])) $vardata[$myvar] = null;
   #echo "Variable: " . $myvar . " [" . $vardata[$myvar] . "]<br>";
   $ret=str_replace('$' . $myvar, $vardata[$myvar], $ret);
}
return $ret;
}
?>
beggining pro
02-Aug-2006 08:00
Well for you egold users out ther I wrote this to just return the balance ONLY
If anyone knows a better way to write this lemme know as im a novice

    function _GetBalance($from, $frompass) {
   $defined_vars = get_defined_vars();

   $_url = 'https://www.e-gold.com/acct/balance.asp';

        $_url_p = "AccountID=" . $from . "&PassPhrase=" . $frompass ."";
           $ch = curl_init();

   curl_setopt($ch, CURLOPT_POST,1);
   curl_setopt($ch, CURLOPT_POSTFIELDS,$_url_p);
   curl_setopt($ch, CURLOPT_URL,$_url);
   curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,  2);
   curl_setopt($ch, CURLOPT_USERAGENT, $defined_vars['HTTP_USER_AGENT']);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
   $content = curl_exec ($ch);

   curl_close ($ch);
$content=strtolower($content);
$content=strstr($content,"</select></font></th></form></tr>");
$content=strip_tags($content);
$content=strrev($content);
$content=strstr($content,"eseht :eton");
$content=str_replace("eseht :eton","",$content);
$content=ltrim($content);
$content=rtrim($content);
$content=substr($content,0,11);
$content=strrev($content);
$content=ltrim($content);

   return $content;

    }
admin at rotarymulundeast dot org
30-Jul-2006 12:16
Here's an easier way to find nth...

function nth($numbex){
  if ($numbex%10 == 1 && $numbex%100 != 11) $sth='st';
  elseif ($numbex%10 == 2 && $numbex%100 != 12) $sth='nd';
  elseif ($numbex%10 == 3 && $numbex%100 != 13) $sth='rd';
  else $sth = 'th';
  return $sth;
}

there is is no need to check if the user has entered a non-integer as we may be using this function for expressing variables as well eg. ith value of x , nth root of z ,etc...
heavyraptor
27-Jul-2006 05:17
I think that
administrador(ensaimada)sphoera(punt)com's function is
too complicated. It's easier with regular expressions.
So I made this function, it isn't really the same,
it's even better because it returns an array with all the
matches found
If there are no matches, false is returned.

<?php
// bool/array str_between( string str, string
start_str, string end_str )
function str_between($str,$start,$end) {
  if (preg_match_all('/' . preg_quote($start) . '(.*?)' . preg_quote($end) . '/',$str,$matches)) {
   return $matches[1];
  }
  // no matches
  return false;
}
?>

Enjoy
da (dot) blayde (a t) gmail (dot) com
19-Jul-2006 07:52
Sometimes when converting integers to strings, it looks better to have the number spelled out. I wrote this function that converts integers from -999 to 999 into spelled out strings:

function int2str($int=0){
 $doOnes=true;
 $neg=$int<0?true:false;
 $int=abs(round($int));
 $str='';
 switch(strlen($int)){
  case 1:$int='0'.$int;
  case 2:$int='0'.$int;
  case 3:$int.='';break;
  default:return $int;
 }
 switch($int{0}){
  case 1:$str.='one-hundred-';break;
  case 2:$str.='two-hundred-';break;
  case 3:$str.='three-hundred-';break;
  case 4:$str.='four-hundred-';break;
  case 5:$str.='five-hundred-';break;
  case 6:$str.='six-hundred-';break;
  case 7:$str.='seven-hundred-';break;
  case 8:$str.='eight-hundred-';break;
  case 9:$str.='nine-hundred-';break;
 }
 switch($int{1}){
  case 1:
   switch($int{2}){
    case 0:$str.='ten-';break;
    case 1:$str.='eleven-';break;
    case 2:$str.='twelve-';break;
    case 3:$str.='thirteen-';break;
    case 4:$str.='fourteen-';break;
    case 5:$str.='fifteen-';break;
    case 6:$str.='sixteen-';break;
    case 7:$str.='seventeen-';break;
    case 8:$str.='eighteen-';break;
    case 9:$str.='nineteen-';break;
   }
   $doOnes=false;
  break;
  case 2:$str.='twenty-';break;
  case 3:$str.='thirty-';break;
  case 4:$str.='forty-';break;
  case 5:$str.='fifty-';break;
  case 6:$str.='sixty-';break;
  case 7:$str.='seventy-';break;
  case 8:$str.='eighty-';break;
  case 9:$str.='ninety-';break;
 }
 if($doOnes){
  switch($int{2}){
   case 1:$str.='one-';break;
   case 2:$str.='two-';break;
   case 3:$str.='three-';break;
   case 4:$str.='four-';break;
   case 5:$str.='five-';break;
   case 6:$str.='six-';break;
   case 7:$str.='seven-';break;
   case 8:$str.='eight-';break;
   case 9:$str.='nine-';break;
 }}
 $str=substr($str,0,-1);
 if($neg){
  $str='negative '.$str;
 }
 if($int=='000'){
  $str='zero';
 }
 return $str;
}

Hope this helps someone,
-Blayde
mickycole at hotmail dot com
19-Jul-2006 09:01
In responce to James Baker's sencence case function.
Great function however i would make one slight variation being that it doesn't take into account the fact that a capital is required after a new paragraph so i modified it to check for /r and /n as follows:
<?PHP
/*/ Author : James Baker /*/
function sentenceCase($s){
   $str = strtolower($s);
   $cap = true;
 
   for($x = 0; $x < strlen($str); $x++){
       $letter = substr($str, $x, 1);
       if($letter == "." || $letter == "!" || $letter == "?" || $letter == "\n" || $letter == "\r"){
           $cap = true;
       }elseif($letter != " " && $cap == true){
           $letter = strtoupper($letter);
           $cap = false;
       }
     
       $ret .= $letter;
   }
 
   return $ret;
}
?>
administrador(ensaimada)sphoera(punt)com
02-Mar-2006 03:10
I've prepared this simple function to obtain a string delimited between tags (not only XML tags!). Anybody needs something like this?.

<?php

function get_string_between($string, $start, $end){
    $string = " ".$string;
     $ini = strpos($string,$start);
     if ($ini == 0) return "";
     $ini += strlen($start);    
     $len = strpos($string,$end,$ini) - $ini;
     return substr($string,$ini,$len);
}

$string = "this [custom] function is useless!!";
echo get_string_between($string,"[","]");
// must return "custom";
?>
more functions at http://www.sphoera.com
SteveRusin
24-Feb-2006 08:00
The functions below:

function beginsWith( $str, $sub )
function endsWith( $str, $sub )

Are correct, but flawed.  You'd need to use the === operator instead:

function beginsWith( $str, $sub ) {
   return ( substr( $str, 0, strlen( $sub ) ) === $sub );
}
function endsWith( $str, $sub ) {
   return ( substr( $str, strlen( $str ) - strlen( $sub ) ) === $sub );
}

Otherwise, endsWith would return "foobar.0" ends with ".0" as well as "0" or "00" or any amount of zeros because numerically .0 does equal 0.
navarr at gmail dot com
21-Dec-2005 03:24
stripos for PHP4.x

<?php
  function stripos($haystack,$needle) {
    return strpos(strtoupper($haystack),strtoupper($needle));
  }
?>
dkflbk at nm dot ru
11-Dec-2005 05:58
I needed str2bin() function for one of my project, so if some one else is want to use it, have fun :)

<?php
/**
 *    Returns an ASCII string containing
 *    the binary representation of the input data .
**/
function str2bin($str, $mode=0) {
    $out = false;
    for($a=0; $a < strlen($str); $a++) {
        $dec = ord(substr($str,$a,1));
        $bin = '';
        for($i=7; $i>=0; $i--) {
            if ( $dec >= pow(2, $i) ) {
                $bin .= "1";
                $dec -= pow(2, $i);
            } else {
                $bin .= "0";
            }
        }
        /* Default-mode */
        if ( $mode == 0 ) $out .= $bin;
        /* Human-mode (easy to read) */
        if ( $mode == 1 ) $out .= $bin . " ";
        /* Array-mode (easy to use) */
        if ( $mode == 2 ) $out[$a] = $bin;
    }
    return $out;
}
?>
admin at fivestarbuy dot com
21-Oct-2005 06:18
This example lets you parse an unparsed strings variables. Warning: This could cause security leaks if you allow users to pass $variables through this engine. I recommend only using this for your Content Management System.

<?
$mytime=time();
$mydog="My Dog Ate My PHP!";

# Your Parsing String:
$s1 = 'Hyphen Variable Preserving: $mytime, and $mydog';
echo "Before: <br><br>$s1<br><br>";

# Remember, wherever you define this, it will not be defined GLOBAL into the function
# which is why we define it here. Defining it global could lead to security issues.
$vardata=get_defined_vars();

# Parse the string
$s1 = StrParse($s1,$vardata);

echo "After: <br><br>$s1";

function StrParse($str,$vardata) {
# Takes a string, or piece of data, that contains PHP Variables
 
 # For example, unparsed variables like:  Test using time: $mytime
 # This example shows $mytime, and not the actual variable value.
 # The end result shows the actual variable value of $mytime.

 # This is useful for building a content management system,
 # and directing your variables into your content data,
 # where content is stored in a file or database, unparsed.
 # Of course this could slow down page loads, but it's a good way
 # to parse data from current variables into your loaded new data
 # making it compatible.
 
# Then the variables are replaced with the actual variable..
$getvarkeys=array_keys($vardata);
$ret=$str;
for ($x=0; $x < count($getvarkeys); $x++) {
    $myvar=$getvarkeys[$x];
    #echo "Variable: " . $myvar . " [" . $vardata[$myvar] . "]<br>";
    $ret=str_replace('$' . $myvar, $vardata[$myvar], $ret);
}
return $ret;

}

?>
18-Oct-2005 12:27
to: james dot d dot baker at gmail dot com

PHP has a builtin function  for doing what your function does,

http://php.net/ucfirst
http://php.net/ucwords
14-Oct-2005 05:24
Updated; used to test for input as an array, should have been a string, added some validation of the input while I was at it.  Enjoy.

<?php
/*----------        Directory Tree to Array        ----------//
  Takes base directory, returns an associative array
       containing each directory name as an associative key
       and each file as an indexed entry in the appropriate
       directory.
  If no path is provided, it uses the current directory
  If $style == 1, it will return a sorted, non-associative
       array

  By Peter Dolan
  www.peterd.net
  Updated 2005-10-12

  Use it as much as you like for whatever
  For my own entertainment, please let me know if you do
//-----------------------------------------------------------*/
function dirTreeToArray( $path = "./", $style="0" ) {
     if ( !is_string($path) or !($style==0 or $style==1) ) die("Improper arguments in function dirTreeToArray(string \$path, \$style = {0, 1})");
     else {
        $path = trim($path);
        $path = str_replace("\\", "/", $path);
        if( '/' == $path{strlen($path)-1} || '\'' == $path{strlen($path)-1} ) $path = substr($path, 0, strlen($path)-1);
     }
     $tree = array();
     $arrayPointer = & $tree;
   if ( $handle = opendir($path) ) {
       while ( $fileName = readdir($handle) ) {
             if ( $fileName != "." and $fileName != ".." ) {
                       $newPath = "$path/$fileName";        // Used for testing directory or file property
                 if ( is_dir($newPath) ) {
                   $dummyPointer = & $arrayPointer;        // Save the current pointer
                     if ( $style == 0 ) $arrayPointer = & $arrayPointer[$fileName];    // Drop the pointer into a subdirectory
                     elseif ( $style == 1 ) $arrayPointer = & $arrayPointer[];        // Drop the pointer into a subdirectory
                     $arrayPointer = dirTreeToArray($newPath, $style);            // Process the new subdirectory
                   if ( $style == 1 ) sort($arrayPointer);    // Sort it if we're in a non-associative mode
                     $arrayPointer = & $dummyPointer;        // Bring the pointer back up a level
               }
                 elseif ( is_file($newPath) ) $arrayPointer[] = $fileName;    // Enter the files
           }
       }
               return $tree;
   }
   else die("Failed to open directory $path in function dirTreeToArray(string \$path, \$style = {0, 1})");
}
?>
tim_meredith at s4s dot org
13-Oct-2005 10:32
--Convert MSWord Quotes--
Use this before any conversion to HTML entities or characters to clean up a form entry cut and pasted from MSWord.

function fixword($scratch)
{
    $start=chr(226).chr(128);
    $word=array();$fixword=array();
    $word[]=$start.chr(152);$fixword[]="'";
    $word[]=$start.chr(153);$fixword[]="'";
    $word[]=$start.chr(156);$fixword[]="\"";
    $word[]=$start.chr(157);$fixword[]="\"";
    return str_replace($word, $fixword, $scratch);
}
webmaster at cafe-clope dot net
14-Aug-2005 01:40
A comprehensive concatenation function, that works with array and strings

<?php
function str_cat() {
  $args = func_get_args() ;
   
  // Asserts that every array given as argument is $dim-size.
  // Keys in arrays are stripped off.
  // If no array is found, $dim stays unset.
  foreach($args as $key => $arg) {
    if(is_array($arg)) {
      if(!isset($dim))
        $dim = count($arg) ;
      elseif($dim != count($arg))
        return FALSE ;
      $args[$key] = array_values($arg) ;
    }
  }
       
  // Concatenation
  if(isset($dim)) {
    $result = array() ;
    for($i=0;$i<$dim;$i++) {
      $result[$i] = '' ;
      foreach($args as $arg)
        $result[$i] .= ( is_array($arg) ? $arg[$i] : $arg ) ;
    }
    return $result ;
  } else {
    return implode($args) ;
  }
}
?>

A simple example :

<?php
str_cat(array(1,2,3), '-', array('foo' => 'foo', 'bar' => 'bar', 'noop' => 'noop')) ;
?>

will return :
Array (
  [0] => 1-foo
  [1] => 2-bar
  [2] => 3-noop
)

More usefull :

<?php
$myget = $_GET ; // retrieving previous $_GET values
$myget['foo'] = 'b a r' ; // changing one value
$myget = str_cat(array_keys($myget), '=', array_map('rawurlencode', array_values($myget))) ;
$querystring = implode(ini_get('arg_separator.output'), $myget)) ;
?>

will return a valid querystring with some values changed.

Note that <?php str_cat('foo', '&', 'bar') ; ?> will return 'foo&bar', while <?php str_cat(array('foo'), '&', 'bar') ; ?> will return array(0 => foo&bar)
t0russ at gmail dot com
14-Jun-2005 07:38
to kristin at greenaple dot on dot ca:
thanx for sharing.
your function in recursive form proved to be slightly faster and it returns false (as it should) when the character is not found instead of number 0:
<?php
function strnposr($haystack, $needle, $occurance, $pos = 0) {
    return ($occurance<2)?strpos($haystack, $needle, $pos):strnposr($haystack,$needle,$occurance-1,strpos($haystack, $needle, $pos) + 1);
}
?>
rh at richardhoward dot net
05-Jun-2005 08:41
<?php
/**
Utility class: static methods for cleaning & escaping untrusted (i.e.
user-supplied) strings.

Any string can (usually) be thought of as being in one of these 'modes':

pure = what the user actually typed / what you want to see on the page /
       what is actually stored in the DB
gpc  = incoming GET, POST or COOKIE data
sql  = escaped for passing safely to RDBMS via SQL (also, data from DB
       queries and file reads if you have magic_quotes_runtime on--which
       is rare)
html = safe for html display (htmlentities applied)

Always knowing what mode your string is in--using these methods to
convert between modes--will prevent SQL injection and cross-site scripting.

This class refers to its own namespace (so it can work in PHP 4--there is no
self keyword until PHP 5). Do not change the name of the class w/o changing
all the internal references.

Example usage: a POST value that you want to query with:
$username = Str::gpc2sql($_POST['username']);
*/

//This sets SQL escaping to use slashes; for Sybase(/MSSQL)-style escaping
// ( ' --> '' ), set to true.
define('STR_SYBASE', false);

class Str {
    function gpc2sql($gpc, $maxLength = false)
    {
        return Str::pure2sql(Str::gpc2pure($gpc), $maxLength);
    }
    function gpc2html($gpc, $maxLength = false)
    {
        return Str::pure2html(Str::gpc2pure($gpc), $maxLength);
    }
    function gpc2pure($gpc)
    {
        if (ini_get('magic_quotes_sybase'))
            $pure = str_replace("''", "'", $gpc);
        else $pure = get_magic_quotes_gpc() ? stripslashes($gpc) : $gpc;
        return $pure;
    }
    function html2pure($html)
    {
        return html_entity_decode($html);
    }
    function html2sql($html, $maxLength = false)
    {
        return Str::pure2sql(Str::html2pure($html), $maxLength);
    }
    function pure2html($pure, $maxLength = false)
    {
        return $maxLength ? htmlentities(substr($pure, 0, $maxLength))
                          : htmlentities($pure);
    }
    function pure2sql($pure, $maxLength = false)
    {
        if ($maxLength) $pure = substr($pure, 0, $maxLength);
        return (STR_SYBASE)
               ? str_replace("'", "''", $pure)
               : addslashes($pure);
    }
    function sql2html($sql, $maxLength = false)
    {
        $pure = Str::sql2pure($sql);
        if ($maxLength) $pure = substr($pure, 0, $maxLength);
        return Str::pure2html($pure);
    }
    function sql2pure($sql)
    {
        return (STR_SYBASE)
               ? str_replace("''", "'", $sql)
               : stripslashes($sql);
    }
}
?>
james dot d dot baker at gmail dot com
27-May-2005 07:45
<?php
/*
Written By James Baker, May 27th 2005

sentenceCase($string);
    $string: The string to convert to sentence case.

Converts a string into proper sentence case (First letter of each sentance capital, all the others smaller)

Example Usage:
echo sentenceCase("HELLO WORLD!!! THIS IS A CAPITALISED SENTENCE. this isn't.");

Returns:
Hello world!!! This is a capitalised sentence. This isn't.
*/

function sentenceCase($s){
    $str = strtolower($s);
    $cap = true;
   
    for($x = 0; $x < strlen($str); $x++){
        $letter = substr($str, $x, 1);
        if($letter == "." || $letter == "!" || $letter == "?"){
            $cap = true;
        }elseif($letter != " " && $cap == true){
            $letter = strtoupper($letter);
            $cap = false;
        }
       
        $ret .= $letter;
    }
   
    return $ret;
}
?>
php at moechofe dot com
26-Apr-2005 03:34
<?php
  /*
  * str_match
  *
  * return a string with only cacacteres defined in a expression return false if the expression is not valid
  *
  * @param $str string the string
  * @param $match the expression based on the class definition off a PCRE regular expression.
  *   the '[', ']', '\' and '^' at class start need to be escaped.
  *   like : -a-z0-9_@.
  */
  function str_match( $str, $match )
  {
    $return = '';
    if( eregi( '(.*)', $match, $class ) )
    {
      $match = '['.$regs[1].']';
      for( $i=0; $i<strlen($str); $i++ )
      if( ereg( '['.$class[1].']', $str[$i] ) )
      $return .= $str{$i};
      return $return;
    }
    else return false;
  }

  /*
  * example
  * accept only alphanum caracteres from the GET/POST parameters 'a'
  */

  if( ! empty($_REQUEST['a']) )
    $_REQUEST['a'] = str_match( $_REQUEST['a'], 'a-zA-Z0-9' );
  else
    $_REQUEST['a'] = 'default';
?>
Pommef
19-Mar-2005 10:15
Example: Give me everything up to the fourth occurance of '/'.

<?php

   $haystack = "/home/username/www/index.php";
   $needle = "/";
 
   function strnpos($haystack, $needle, $occurance, $pos = 0) {
       
        $res = implode($needle,$haystack);
       
        $res = array_slice($res, $pos,  $occurance);
       
        return explode ($needle,$res);
    }
?>
kristin at greenapple dot on dot ca
02-Jan-2005 05:32
I really searched for a function that would do this as I've seen it in other languages but I couldn't find it here. This is particularily useful when combined with substr() to take the first part of a string up to a certain point.

strnpos() - Find the nth position of needle in haystack.

<?php

    function strnpos($haystack, $needle, $occurance, $pos = 0) {
       
        for ($i = 1; $i <= $occurance; $i++) {
            $pos = strpos($haystack, $needle, $pos) + 1;
        }
        return $pos - 1;
       
    }

?>

Example: Give me everything up to the fourth occurance of '/'.

<?php

    $haystack = "/home/username/www/index.php";
    $needle = "/";
   
    $root_dir = substr($haystack, 0, strnpos($haystack, $needle, 4));
   
    echo $root_dir;
   
?>

Returns: /home/username/www

Use this example with the server variable $_SERVER['SCRIPT_NAME'] as the haystack and you can self-discover a document's root directory for the purposes of locating global files automatically!
21-Dec-2004 05:31
In response to hackajar <matt> yahoo <trot> com,

No string-to-array function exists because it is not needed. If you reference a string with an offset like you do with an array, the character at that offset will be return. This is documented in section III.11's "Strings" article under the "String access and modification by character" heading.
andy a t onesandzeros d o t biz
09-Nov-2004 11:54
I use these little doo-dads quite a bit. I just thought I'd share them and maybe save someone a little time. No biggy. :)

// returns true if $str begins with $sub
function beginsWith( $str, $sub ) {
    return ( substr( $str, 0, strlen( $sub ) ) == $sub );
}

// return tru if $str ends with $sub
function endsWith( $str, $sub ) {
    return ( substr( $str, strlen( $str ) - strlen( $sub ) ) == $sub );
}

// trims off x chars from the front of a string
// or the matching string in $off is trimmed off
function trimOffFront( $off, $str ) {
    if( is_numeric( $off ) )
        return substr( $str, $off );
    else
        return substr( $str, strlen( $off ) );
}

// trims off x chars from the end of a string
// or the matching string in $off is trimmed off
function trimOffEnd( $off, $str ) {
    if( is_numeric( $off ) )
        return substr( $str, 0, strlen( $str ) - $off );
    else
        return substr( $str, 0, strlen( $str ) - strlen( $off ) );
}
[tab!]
27-Oct-2004 09:29
//
// string strtrmvistl(  string str, [int maxlen = 64],
//                      [bool right_justify = false],
//                      [string delimter = "<br>\n"])
//
// splits a long string into two chunks (a start and an end chunk)
// of a given maximum length and seperates them by a given delimeter.
// a second chunk can be right-justified within maxlen.
// may be used to 'spread' a string over two lines.
//

function strtrmvistl($str, $maxlen = 64, $right_justify = false, $delimter = "<br>\n") {
    if(($len = strlen($str = chop($str))) > ($maxlen = max($maxlen, 12))) {
        $newstr = substr($str, 0, $maxlen - 3);

        if($len > ($maxlen - 3)) {
            $endlen = min(($len - strlen($newstr)), $maxlen - 3);
            $newstr .= "..." . $delimter;

            if($right_justify)
                $newstr .= str_pad('', $maxlen - $endlen - 3, ' ');

            $newstr .= "..." . substr($str, $len - $endlen);
        }

        return($newstr);
    }

    return($str);
}
terry dot greenlaw at logicalshift dot com
12-Aug-2004 07:52
Here's a simpler "simplest" way to toggle through a set of 1..n colors for web backgrounds:

<?php
$colours = array('#000000', '#808080', '#A0A0A0', '#FFFFFF');

// Get a colour
$color = next($colors) or $color = reset($colors);
?>

The code doesn't need to know anything about the number of elements being cycled through. That way you won't have to tracking down all the code when changing the number of colors or the color values.
add a note add a note

addcslashes> <Strings
Last updated: Fri, 18 Jul 2008
 
 
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