How to check the URL's structure using PHP preg_match?

» php » How to check the URL's structure using PHP preg_match?

By : user3100304

Date : January 12 2021, 01:40 AM

I hope this helps . If section is a word (and can not contain digits), and item is a number, you could match word characters except digits using [^\W\d]+ and \d+ to match 1+ digits.
As in the example data there are optional parts, you could replace (/.*)?$ with (?:/[^\W\d]+(?:/\d+)?)?$.

code :

^https?://[a-z0-9-]+(?:\.[a-z0-9-]+)*(?::[0-9]+)?(?:/[^\W\d]+(?:/\d+)?)?$

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php preg_match multiple urls

By : Papagrape21

Date : March 29 2020, 07:55 AM

seems to work fine I know next to nothing about php so this will make someone laugh probably.

code :

// [12] to match 1 or 2
// also need to escape . for match real . otherwise . will match any char
if (!preg_match("/site[12]\.net\.nz/",$host)) {
    header('Location: http://www.siteblah.net.nz/temp_internet_block.cfm');
}

if (!preg_match("/site1\.net\.nz|site2\.net\.nz/",$host)) {
    header('Location: http://www.siteblah.net.nz/temp_internet_block.cfm');
}

Check text area for URLs with preg_match

By : Kenterky

Date : March 29 2020, 07:55 AM

I wish this helpful for you i found this code for checking a text area: , you just need to add / like

code :

  preg_match("/(www.[a-zA-Z0-9_-]+)\.([a-zA-Z0-9.]+)/",$textp)

preg_match() to check Image urls without [img] BB tags and return boolean value using PHP

By : user2120072

Date : March 29 2020, 07:55 AM

I wish this helpful for you With regex is quite difficult to look for a pattern without a piece, in this case the img open and closure tag.
So I would search the urls within the tag, then search all the urls and compare these counts

code :

$text = "";

$tagPattern = "/\[img\].+?\[\/img\]/";
preg_match_all($pattern, $text, $tagMatches);

$urlInTagCount = count($tagMatches[0]);

$plainPattern = "~https?://\S+\.(?:jpe?g|gif|png)(?:\?\S*)?(?=\s|$|\pP)~i";
preg_match_all($pattern, $text, $plainMatches);

$allUrlCount = count($plainMatches[0]);

return $allUrlCount > $urlInTagCount;

preg_match to check if string has specific structure

By : Pam B

Date : March 29 2020, 07:55 AM

this one helps. Assuming only the restrictions listed in your question are needed, this will validate the string:

code :

$number = 3;
$regex = sprintf('/^[^:]+:(?:[^;]+;){%d}$/', $number);

if (preg_match($regex, $string)) {
    echo "It matches!";
} else {
    echo "It doesn't match!";
}

php > $number = 3;
php > $regex = sprintf('/^[^:]+:(?:[^;]+;){%d}$/', $number);

php > if (preg_match($regex, 'options:blue;white;yellow;')) {
php {     echo "It matches!";
php { } else {
php {     echo "It doesn't match!";
php { }
It matches!

php > if (preg_match($regex, 'options:blue;white;yellow;green;')) {
php {     echo "It matches!";
php { } else {
php {     echo "It doesn't match!";
php { }
It doesn't match!

/.../          Start and end of the pattern.
^              Start of the string.
[^:]+          At least one character that is not a ':'.
:              A literal ':'.
(?:[^;]+;){N}  Exactly N occurrences of:
                   [^;]+  At least one character that is not a ';'.
                   ;      A literal ';'.
$              End of the string.

Preg_match urls in css

By : user2628638

Date : March 29 2020, 07:55 AM

around this issue For your example data, one option could be to recurse the first subpattern (?1 and use a second capturing group for the url.
The url will be in capturing group 2.

code :

url(\(((?:[^()]+|(?1))+)\))

$re = '/url(\(((?:[^()]+|(?1))+)\))/m';
$str = 'background:url("/product/header/img1.png") and background:url("/product/header/img2.png\' and background:url(/product/header/img3.png"))';

preg_match_all($re, $str, $matches, PREG_SET_ORDER);

foreach ($matches as $match) {
    if (preg_match('/^([\'"]?)[^"]+\1$/', $match[2])) {
        echo trim($match[2], "'\"") . PHP_EOL;
    }
}