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How to find substrings in PHP strings without case sensitivity?

青灯夜游Original: 2020-07-17 14:11:122839browse

In PHP, you can use the stristr() function to find another substring in a string without case sensitivity. Returns the remainder of the string (from the matching point) if the lookup is successful, or false if the string is not found.

In PHP, the stristr() function is used to find another string in a string without case sensitivity. [Related recommendations: PHP Tutorial]

If the search is successful, the rest of the string (from the matching point) is returned. If the string is not found, false is returned.

Syntax

stristr(string,search,before_search)

How to find substrings in PHP strings without case sensitivity?

Example: Return the part of the string before the first occurrence of "world" :

<!DOCTYPE html>
<html>
<body>

<?php
echo stristr("Hello world!","WORLD",true);
?>

</body>
</html>

Result:

Hello

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