replace single char in php code example

Example 1: php replace

str_replace ($search, $replace, $subject);

Example 2: str_replace php

echo str_replace("worss","world","Hello worss in PHP!!");

Example 3: php str replace

<?php
$string = str_ireplace("FoX", "CAT", "the quick brown fox jumps over the lazy dog");
echo $string; // the quick brown CAT jumps over the lazy dog
?>