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run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array("Painted concrete Walls.1", "Concrete steps with steel rainings.0", "Steel emergency staircase.0"); $tempArray = array(); $newArray = array(); foreach($array as $value) { $item = explode(".", $value); $int = filter_var($item[0], FILTER_SANITIZE_NUMBER_INT); if(!in_array($int, $tempArray)) { $newArray[] = $value; $tempArray[] = $int; } } print_r($newArray); ?>
based on FT1sN
Output for 5.2.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Painted concrete Walls.1 )
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/tJIYF on line 9
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/tJIYF on line 9
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/tJIYF on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/tJIYF on line 9