PHP stristr () function (case-insensitive string lookup) _php base

If the lookup succeeds, the remainder of the string is returned (from a matching point) and False if the string is not found.

Version support: PHP 3+

Grammar:
Stristr (String,find)

Description
String required. Specify the string to be searched for.
Find required. Specify the characters to find. If the argument is a number, search for the character that matches the ASCII value of the number.

Tips:
The function is binary safe.
This function is not sensitive to case. For case sensitive searches, use STRSTR ().

Example:

Example 1

Copy Code code as follows:

<?php
Echo stristr ("Hello world!", "World");
?>

Output:

world!

Example 2

Copy Code code as follows:

<?php
Echo stristr ("Hello world!", 111);
?>

Output:

o world!