w3resource

PHP: strstr() function

Description

The strstr() function is used to get the first occurrence of a string inside another string.

This function is case-sensitive.

Version:

(PHP 4 and above)

Syntax:

strstr(string_name, search_string, before_search) 

Parameters:

Name Description Required /
Optional
Type
string_name The input string. Required String
search_string The string to search for. Required Mixed*
before_search Returns the part of the string_name before the first occurrence of the search_string when true. Optional Boolean

*Mixed: Mixed indicates that a parameter may accept multiple (but not necessarily all) types.

Return value:

The portion of the string, or false if search_string is not found.

Value Type: String.

Pictorial Presentation

string_strstr

Example:

<?php
$string1="W3RESOURCE.COM";
$newstring=strstr($string1,".");
echo $newstring;
?>

Output:

.COM

View the example in the browser

See also

PHP Function Reference

Previous: strspn
Next: strtolower



PHP: Tips of the Day

Get the full URL in PHP

Have a look at $_SERVER['REQUEST_URI'], i.e.

Example:

$actual_link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

(Note that the double quoted string syntax is perfectly correct)

If you want to support both HTTP and HTTPS, you can use

$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

Editor's note: using this code has security implications. The client can set HTTP_HOST and REQUEST_URI to any arbitrary value it wants.

Ref : https://bit.ly/2ZYItNJ