3v4l.org

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<?php $today ="30/06/2018"; echo round(date("z", strtotime(str_replace("/", "-", $today)))/365*100,0) . "%";
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
49%
preferences:
163.41 ms | 408 KiB | 5 Q