str_replace():
The str_replace() function replaces some characters with some other characters in a string.
This function replaces all occurrences of the search string in the main string with the replace string. Let's look at the example below.
str_replace (search_for_replace, replace_with, string)
The first parameter is what you are searching for replace, the second parameter is a string of replace with, and the third parameter is the string you want searched. All three parameters can use an array as input if desired.
Program
<?php
$str = "Hello! How are you today?";
echo str_replace("Hello", "Hi", $str);
?>
In the above example, replace the "Hello" with "Hi" in string $str. The above code will output "Hi! How are you today?".