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PHP - Function preg_split()


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Syntax

array preg_split (string pattern, string string [, int limit [, int flags]]);

Definition and Usage

The preg_split() function operates exactly like split(), except that regular expressions are accepted as input parameters for pattern.

If the optional input parameter limit is specified, then only limit number of substrings are returned.

flags can be any combination of the following flags −

  • PREG_SPLIT_NO_EMPTY − If this flag is set, only non-empty pieces will be returned by preg_split().

  • PREG_SPLIT_DELIM_CAPTURE − If this flag is set, parenthesized expression in the delimiter pattern will be captured and returned as well.

  • PREG_SPLIT_OFFSET_CAPTURE − If this flag is set, for every occurring match the appendant string offset will also be returned.

Return Value

  • Returns an array of strings after splitting up a string.

Example

Following is the piece of code, copy and paste this code into a file and verify the result.

<?php
   $ip = "123.456.789.000"; // some IP address
   $iparr = preg_split ("/\./", $ip); 
   
   print "$iparr[0] <br />";
   print "$iparr[1] <br />" ;
   print "$iparr[2] <br />"  ;
   print "$iparr[3] <br />"  ;
?>

This will produce the following result −

123 
456 
789 
000 
php_regular_expression.htm

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