PHP str_ireplace() Function

PHP str_ireplace() Function

The PHP str_ireplace() function in PHP replaces some characters with some other characters in a string.

Syntax

str_ireplace ( mixed $search , mixed  $replace , mixed $subject [, int &$count ] )

Parameter

search(required)- This parameter specifies the value being searched for.

replace(required)- This parameter represents the replacement value that replaces found search values.

subject(required)- This parameter signifies the string or array being searched and replaced.

count(optional)- It signifies a variable that counts the number of replacements.

Return

This function returns a string or an array of replacements.

Example 1

<?php
//initializing the actual string
$str= "Hello World!";
echo "The original string:".$str;
// the value to replace the value in find 
$str1= "WORLD";
// the string to be searched
$str2= "PHP";
// replaces some characters with some other characters in a string
echo "\nAfter the str_ireplace() function...\n"; 
echo "New string: ".str_ireplace($str1,$str2,"Hello world!");
?> 

Output

The original string:Hello World!
 After the str_ireplace() function...
 New string: Hello PHP! 

Example 2

<?php  
//Case-insensitive  
$find = array("Example","And","Tutorial");   
$replace = array("T");  
$arr = array("Example","and");  
echo "After using the str_ireplace()...";  
echo "\n";  
print_r(str_ireplace($find,$replace,$arr));  
?>   

Output

After using the str_ireplace()...
 Array
 (
     [0] => T
     [1] => 
 ) 

Example 3

<?php
// initializing the string  
$find = array("HELLO","WORLD");
$replace = array("D");
$arr = array("Hello","world","$"); 
print_r(str_ireplace($find,$replace,$arr));
?> 

Output

Array
 (
     [0] => D
     [1] => 
     [2] => $
 )