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run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array("a","b","c"); echo "this is " . $array[3] . "\n"; echo empty($array[3]). "\n"; echo empty($array[2]). "\n"; $url = $_SERVER['REQUEST_URI']; echo $url;
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined offset: 3 in /in/dsHZo on line 3 this is 1 Notice: Undefined index: REQUEST_URI in /in/dsHZo on line 6
Output for hhvm-3.12.0
Notice: Undefined index: 3 in /in/dsHZo on line 3 this is 1 Notice: Undefined index: REQUEST_URI in /in/dsHZo on line 6
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 3 in /in/dsHZo on line 3 this is 1 Notice: Undefined index: REQUEST_URI in /in/dsHZo on line 6