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@ 2015-04-28T16:17:42Z

<?php
// 1. Identify the block of <a> elements
$string = '<div><a href=%http://link1%><img></a><a href=%http://link2%><img></a><a href=%http://link3%><img></a></div>';
$re = '|<div>((<a((?!href)(?!<).)+?href=%([^%]+?)%((?!</a>).)+?</a>){3})</div>|';
$matches = array();

echo('result='.intval(preg_match($re, $string, $matches))."\n");
echo('$matches='); print_r($matches);
/*
// 2. Split it into individual <a> elements
$re = '|(?<=</a>)(?=<a)|';
$pieces = preg_split($re, $matches[1]);
echo('$pieces='); print_r($pieces);

// 3. Analyze each <a> element, extract the interesting components
$re = '|href=%([^%]*)%|';
foreach ($pieces as $a) {
    $matches = array();
    if (preg_match($re, $a, $matches)) {
        echo($a.': '.$matches[1]."\n");
    }
}
*/
$re = '|<a((?!href)(?!<).)+?href=%([^%]+?)%((?!</a>).)+?</a>|';
preg_match_all($re, $matches[1], $matches);
print_r($matches);

Output for git.master, git.master_jit, rfc.property-hooks: result=1 $matches=Array ( [0] => <div><a href=%http://link1%><img></a><a href=%http://link2%><img></a><a href=%http://link3%><img></a></div> [1] => <a href=%http://link1%><img></a><a href=%http://link2%><img></a><a href=%http://link3%><img></a> [2] => <a href=%http://link3%><img></a> [3] => [4] => http://link3 [5] => > ) Array ( [0] => Array ( [0] => <a href=%http://link1%><img></a> [1] => <a href=%http://link2%><img></a> [2] => <a href=%http://link3%><img></a> ) [1] => Array ( [0] => [1] => [2] => ) [2] => Array ( [0] => http://link1 [1] => http://link2 [2] => http://link3 ) [3] => Array ( [0] => > [1] => > [2] => > ) )

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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