How to use php stristr function

PHP stristr function returns a string from the beginning to the end of another string. It is not case-sensitive. Its syntax is stristr(string,search,before_search). The parameter string is required and specifies what is to be searched. String; required for search, specifies the string to be searched.

How to use php stristr function?

php stristr() function syntax

Function: Returns a string from the beginning to the end of another string, case-insensitive

Syntax:

stristr(string,search,before_search)

Parameters:

string required. Specifies the string to be searched for.

search Required. Specifies the string to search for. If the argument is a number, searches for characters that match the ASCII value for that number.

before_search Optional. The default value is a Boolean value of "false". If set to "true", it returns the portion of the string preceding the first occurrence of the search parameter.

Description:

Search for the first occurrence of a string in another string. This function is binary safe. This function is not case sensitive. For case-sensitive searches, use the strstr() function.

php stristr() function usage example 1:

<?php
echo stristr("Hello php.cn!","php");
?>

Output:

php.cn!

php stristr() function usage example 2:

<?php
echo stristr("i study php in php.cn!","study");
?>

Output:

study php in php.cn!

This article is an introduction to the PHP stristr function. I hope it will be helpful to friends in need!

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