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run code in 150+ php & hhvm versions
Bugs & Features
<?php $strselvaluelist = '4|17'; $i=0; if(!empty($strselvaluelist)){ while($i < strlen($strselvaluelist)){ if($strselvaluelist[$i] == 4){ if(!strstr($strselvaluelist,17)){ $strselvaluelist.='|17'; } } $i++; } } var_dump($strselvaluelist);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(7) "4|17|17"