Simple usage examples of preg_replace_callback functions in PHP _php tips

This article illustrates the use of Preg_replace_callback functions in PHP. Share to everyone for your reference, specific as follows:

Mixed Preg_replace_callback (mixed pattern, callback callback, mixed subject [, int limit])

The behavior of this function is almost the same as Preg_replace (), except that instead of providing a replacement parameter, you specify a callback function. The function takes an array of matches in the target string as an input parameter and returns a string for substitution.

For example, question:

Preg_replace ($skx, $imsz 2, $neirong);

For example: There are multiple $skx in $neirong I need to get a different ID for each replacement.

Example:

<?php
$str = ' This was a test for this string includes many this ';
$replace = '/this/x ';
$result =preg_replace_callback (
  $replace,
  function ($ms) {
   static $i;
   $i = $i +1;
   Return "That ($i)";
  },
  $str
 );
echo $result, "n";

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