PHP str_replace Examples Edit Cheat Sheet

Syntax

$result = str_replace ($pattern, $replacement, $string);

For case-insensitive replacement:

$result = str_ireplace ($pattern, $replacement, $string);

Multiple Replacements

If you have a list of replacements you can perform it like this

$pattern      = array('ä', 'ü', 'ö');
$replacements = array('ä', 'ü', 'ö');

$result = str_replace($pattern, $replacements, $string);

Count Replacements

To get the number of substitutions pass a 4th call by reference parameter:

$result = str_replace($pattern, $replacement, $string, $count);

Alternative Methods

As str_replace doesn’t suit all use cases you sometimes have to switch to other PHP methods:

• Matching with regular expressions: see PHP preg_replace
• Limiting to n substitutions:
  • Use PHP preg_replace
  • Use PHP explode + PHP implode
  • Use strpos + substr_replace