PHP str_ireplace() Function
Example
Replace the characters "WORLD" (case-insensitive) in the string "Hello world!" with "Peter":
<?php
echo str_ireplace("WORLD","Peter","Hello world!");
?>
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Definition and Usage
The str_ireplace() function replaces some characters with some other characters in a string.
This function works by the following rules:
- If the string to be searched is an array, it returns an array
- If the string to be searched is an array, find and replace is performed with every array element
- If both find and replace are arrays, and replace has fewer elements than find, an empty string will be used as replace
- If find is an array and replace is a string, the replace string will be used for every find value
Note: This function is case-insensitive. Use the str_replace() function to perform a case-sensitive search.
Note: This function is binary-safe.
Syntax
str_ireplace(find,replace,string,count)
| Parameter | Description |
|---|---|
| find | Required. Specifies the value to find |
| replace | Required. Specifies the value to replace the value in find |
| string | Required. Specifies the string to be searched |
| count | Optional. A variable that counts the number of replacements |
Technical Details
| Return Value: | Returns a string or an array with the replaced values |
|---|---|
| PHP Version: | 5+ |
| Changelog: | The count parameter was added in PHP 5.0 |
More Examples
Example 1
Using str_ireplace() with an array and a count variable:
<?php
$arr = array("blue","red","green","yellow");
print_r(str_ireplace("RED","pink",$arr,$i)); // This function is case-insensitive
echo "Replacements: $i";
?>
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Example 2
Using str_ireplace() with fewer elements in replace than find:
<?php
$find = array("HELLO","WORLD");
$replace = array("B");
$arr = array("Hello","world","!");
print_r(str_ireplace($find,$replace,$arr));
?>
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❮ PHP String Reference
