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run code in 150+ php & hhvm versions
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<?php $output = "<a href='url' title='post_title'>link_text</a>"; preg_match("/href='(.*?)'/i", $output, $matches); var_dump($matches);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> string(10) "href='url'" [1]=> string(3) "url" }