3v4l.org

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<?php $strselvaluelist = "4|2"; if(!empty($strselvaluelist)){ echo 0; if(strstr("4", $strselvaluelist)){ echo 1; if(!strstr("17", $strselvaluelist)){ $strselvaluelist.='|17'; echo 2; } } } var_dump($strselvaluelist);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0string(3) "4|2"
preferences:
269.98 ms | 406 KiB | 460 Q