Why is this strstr() returning false?

Question

I am trying to find whether a string contains a certain text or not using strstr()

$t = "http://site.com/image/d2737cda28cb420c972f7a0ce856cf22";
var_dump(strstr('/image/', $t));
exit;

But this gives false. Why is it giving fasle? How to fix it?

Clear evidence that a Jedi wrote php. "In a haystack, a needle you must find." — Floris, Aug 07 '13 at 02:52

score 2 · Accepted Answer · answered Aug 07 '13 at 02:25

2

Your parameters are inverted (see strstr). This is the correct way of using it:

strstr($t, '/image/');

answered Aug 07 '13 at 02:25

federico-t

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Oh... why does php always mix up with `needle` and `haystack`? – mrN Aug 07 '13 at 02:27

score 2 · Answer 2 · 2013-08-07T02:38:07.350

2

you should use strpos , faster, less resources, from the manual with your vars

<?php
$t = "http://site.com/image/d2737cda28cb420c972f7a0ce856cf22";
$findme   = '/image/';
$pos = strpos($t, $findme);

// Note our use of ===.  Simply == would not work as expected
// because the position of 'a' was the 0th (first) character.
if ($pos === false) {
    echo "The string '$findme' was not found in the string '$mystring'";
} else {
    echo "The string '$findme' was found in the string '$mystring'";
    echo " and exists at position $pos";
}
?>

edited Aug 07 '13 at 02:38

answered Aug 07 '13 at 02:26

How about just `if(!$pos)`? Will that omit the need of `===`? – mrN Aug 07 '13 at 02:34
I accepted other answer as that is the answer to my question. But I am using your solution. +1 – mrN Aug 07 '13 at 03:09
nooo the points! all those lovely points i have lost :-; -kidding all good ;-) – Aug 07 '13 at 03:10

score 0 · Answer 3 · answered Aug 07 '13 at 02:28

0

try like this instead

<?php
$t = "http://site.com/image/d2737cda28cb420c972f7a0ce856cf22";
var_dump(strstr($t, '/image/'));
exit;
?>

answered Aug 07 '13 at 02:28

meda

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score 0 · Answer 4 · answered Aug 07 '13 at 02:35

0

You can see the documentation of the function.

Validates the syntax.

php/documentation/function.strstr.php

The correct use would: var_dump(strstr($t, '/image/'));

answered Aug 07 '13 at 02:35

iBet7o

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Why is this strstr() returning false?

4 Answers4