How To Find A Substring From A Given String In PHP

How To Find A Substring From A Given String In PHP


  • 9 Jan, 2012

    To find a substring in a given string, you can use the strpos() function. If you call strpos($haystack, $needle), it will try to find the position of the first occurrence of the $needle string in the $haystack string. If found, it will return a non-negative integer represents the position of $needle. Othewise, it will return a Boolean false. Here is a PHP script example of strpos():<?php$haystack1 = "2349534134345globalguideline16504381640386488129";$haystack2 = "globalguideline234953413434516504381640386488129";$haystack3 = "guideline234953413434516504381640386488129ggl";$pos1 = strpos($haystack1, "globalguideline");$pos2 = strpos($haystack2, "globalguideline");$pos3 = strpos($haystack3, "globalguideline");print("pos1 = ($pos1); type is " . gettype($pos1) . "");print("pos2 = ($pos2); type is " . gettype($pos2) . "");print("pos3 = ($pos3); type is " . gettype($pos3) . "");?>This script will print:pos1 = (13); type is integerpos2 = (0); type is integerpos3 = (); type is boolean"pos3" shows strpos() can return a Boolean value

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