Split string PHP

Question

I have never understood the pattern of regular expression and after googling I haven't been any wiser.

I want to grab the WordPress version number (3.2) from this string:

<meta name="generator" content="WordPress 3.2" />

In the future when upgrading to 3.3 I wan't the split code to be able to get that to. So no static expression.

How do I solve this?

The proper way would be to use a [HTML parser](http://stackoverflow.com/questions/3577641/best-methods-to-parse-html-with-php/3577662#3577662), even though it might seem like overkill for the task — Pekka, Jul 12 '11 at 17:26
It might be overkill, but it would be a lot more reliable in the long run. If WP changes whitespace or what have you, the regex could break. — Anthony, Jul 12 '11 at 17:29

score 2 · Accepted Answer · answered Jul 12 '11 at 18:17

Here is a regular expression that works for this...

$str = '<meta name="generator" content="WordPress 3.2" />';
preg_match('/meta name="generator" content="WordPress [0-9]+\.[0-9]" /', $str, $matches);
preg_match('/[0-9]+\.[0-9]/', $matches[0], $matches1);
$version = $matches1[0];
echo "Wordpress version is = $version";

It should output this:

Wordpress version is = 3.2

score 0 · Answer 2 · answered Feb 25 '14 at 09:53

Though it's pretty old question, and out of curiosity, why don't you just use builtin function to retreve the WordPress version being used?

<?php echo get_bloginfo( 'version' );?>

This way, even the Generator meta is removed, you will get the exact version from $wp_version var.

Ilia Choly · Answer 3 · 2011-07-12T17:36:24.023

0

$data = '<meta name="generator" content="WordPress 3.2" />';
$pat = '<meta name="generator" content="WordPress (\d*\.?\d*)" />';
if(($match = preg_match($pat, $data)) !== false){
    echo $match[1];
}else{
    echo "not found";
}

edited Jul 12 '11 at 17:36

answered Jul 12 '11 at 17:30

Ilia Choly

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score 0 · Answer 4 · answered Jul 12 '11 at 17:35

0

preg_match('|<meta name="generator" content="WordPress (.*?)" />|', $where_to_search_for, $match);
print_r($match);

answered Jul 12 '11 at 17:35

genesis

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Split string PHP

4 Answers4