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# stristr

(PHP 3>= 3.0.6, PHP 4 , PHP 5)

stristr -- Case-insensitive strstr()

## Description

string stristr ( string haystack, string needle)

Returns all of haystack from the first occurrence of needle to the end. needle and haystack are examined in a case-insensitive manner.

If needle is not found, returns `FALSE`.

If needle is not a string, it is converted to an integer and applied as the ordinal value of a character.

示範 1.stristr() example
`<?php $email = 'USER@EXAMPLE.com'; $domain = stristr($email, 'e'); echo $domain; // outputs ER@EXAMPLE.com ?>`

> 備注:這個函數可安全的使用於二進位。

See also strstr(), strrchr(), substr(), and ereg().

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