Regex - match http but not https with constraint

Question

PHP Regex

Source:

http://example.com/wp-content/uploads/2017/01/image.jpg
https://example.com/wp-content/uploads/2017/01/image2.jpg
http://example.com/wp-content/plugins/example-plugin/images/image.jpg

Objective

I want to match all strings that:

Contains HTTP, but not HTTPS
Contains wp-content/uploads/

.. and I do not want to capture the wp-content/uploads/ part so that's a non-capturing group from what I can figure.

I have tried doing a positive-lookahead but I can't seem to get it right. This is what I've come up with so far but I dont' know where to put the HTTP part. The regex tester at regex101 just doesnt match.

(?=(?:(wp-content\/uploads)+))

Update:

To clarify, I need simple regex, no PHP code. In other words, PCRE which PHP uses.

if (parse_url($url, PHP_URL_SCHEME) == "https") { return false; } not suitable for you? — apokryfos
– apokryfos, Commented Jan 10, 2017 at 14:55
Are your urls already isolated (each one is in a separated string) or are all of them inside a larger string? — Casimir et Hippolyte
– Casimir et Hippolyte, Commented Jan 10, 2017 at 14:56
These strings are present in post_content and other database columns on a WordPress installation. My objective is to replace http with https through search-and-replace tool: interconnectit.com/products/… — Anton Flärd
– Anton Flärd, Commented Jan 10, 2017 at 15:00
More about the flags than the RegExp, e.g. ~^http://[^\v]+/wp-content/uploads[^\v]+$~mg it needs to be multiline (m) and global (g): regex101.com/r/hId37t/1 — CD001
– CD001, Commented Jan 10, 2017 at 16:45
You may want to go with http://[^\s'"]+?wp-content/uploads/[^\s"']+ — revo
– revo, Commented Jan 10, 2017 at 20:46

myxaxa · Accepted Answer · 2017-01-10 15:19:26Z

3

something like that:

<?php
$strings = [
    'http://example.com/wp-content/uploads/2017/01/image.jpg',
    'https://example.com/wp-content/uploads/2017/01/image2.jpg',
    'http://example.com/wp-content/plugins/example-plugin/images/image.jpg'
];
$pattern = '/(http[^s]).+(wp-content\/uploads/)(.+)/';
foreach ($strings as $subject) {
    if (preg_match($pattern, $subject, $matches)) {
        echo $matches[3] . "\n";
    }
}

edited Jan 10, 2017 at 15:19

answered Jan 10, 2017 at 14:57

myxaxa

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2 Comments

Casimir et Hippolyte Over a year ago

Instead of using foreach and preg_match, you should consider to use preg_grep.

Toto Over a year ago

That is not what OP wants I do not want to capture the wp-content/uploads/

Maslo · Accepted Answer · 2017-01-10 14:52:01Z

0

If you are just looking for a YES/NO then the following would work:

http[^s].*wp-content\/uploads\/

See https://regex101.com/r/kPxOMt/1 for an example.

If you're looking to capture part of the url, please tell me and I'll update the regex.

answered Jan 10, 2017 at 14:52

Maslo

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Comments

revo · Accepted Answer · 2017-01-10 20:50:14Z

0

I do not want to capture the wp-content/uploads/

$res = '';
if (preg_match('~(http://.*?)wp-content/uploads/(\S*)~', $string, $m) {
    $res = $m[1] . $m[2];
}

edited Jan 10, 2017 at 20:50

revo

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answered Jan 10, 2017 at 15:05

Toto

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2 Comments

revo Over a year ago

According to OP These strings are present in post_content and other database columns on a WordPress installation this won't guarantee matching the right things.

Toto Over a year ago

@revo:Thanks for edit ;) OP needs to show real strings before giving a completly valid regex. This one works on actualy given examples.

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