3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $reg_exUrl = "/((http|https)\:\/\/|(www)\.)[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/"; $text = 'some text http://google.bg/'; preg_match_all($reg_exUrl, $text, $matches); $usedPatterns = array(); foreach($matches[0] as $pattern){ if(!array_key_exists($pattern, $usedPatterns)) { $usedPatterns[$pattern]=true; if(preg_match('%https://%',$pattern)) { //$start = "https://"; } elseif(preg_match('%http://%',$pattern)) { //$start = "http://"; } else { $start = "http://"; } $text = str_replace ($pattern, "<a href='".isset($start) ? $start : ''."{$pattern}' target='_blank'>{$pattern}</a> ", $text); } } echo $text;
Output for 5.0.4 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: start in /in/I2pRc on line 23 some text
Output for hhvm-3.10.0
Notice: Undefined variable: start in /in/I2pRc on line -1 some text
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: start in /in/I2pRc on line 23 some text