PHP implementation of the sub-string position Exchange swap method [Original]_php Tips

The example of this article is about how to swap the position of the substring in PHP. Share to everyone for your reference, specific as follows:

<?php
/* substring position swap
 * * *
$str 1= "Tom";
$str 2= "Jack";
$str = "This is a example,you to Tom tell Jack something";
function Str_change ($str, $str 1, $str 2) {
  $len 1=strlen ($str 1);
  $len 2=strlen ($str 2);
  $pos 1=strpos ($str, $str 1);
  $str =substr_replace ($str, $str 2, $pos 1, $len 1);//replace $str1 for $STR2
  $pos 2= strpos ($str, $str 2, $len 1+ $pos 1); Position return
  substr_replace ($str, $str 1, $pos 2, $len 2) of the $str2 field after the replacement of the string;/replace $STR2 with $STR1
}
Echo str_ Change ($str, $str 1, $str 2);
? >

The results of the operation are:

This is a example,you, Jack tell Tom something

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PHP code online format Landscaping tools:

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I hope this article will help you with the PHP program design.