3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(unserialize("O:8:"stdClass":23:{s:2:"ID";s:1:"1";s:11:"post_author";s:1:"1";s:9:"post_date";s:19:"2016-01-13 12:58:05";s:13:"post_date_gmt";s:19:"2016-01-13 12:58:05";s:12:"post_content";s:85:"Welcome to WordPress. This is your first post. Edit or delete it, then start writing!";s:10:"post_title";s:12:"Hello world!";s:12:"post_excerpt";s:0:"";s:11:"post_status";s:7:"publish";s:14:"comment_status";s:4:"open";s:11:"ping_status";s:4:"open";s:13:"post_password";s:0:"";s:9:"post_name";s:11:"hello-world";s:7:"to_ping";s:0:"";s:6:"pinged";s:0:"";s:13:"post_modified";s:19:"2016-01-13 12:58:05";s:17:"post_modified_gmt";s:19:"2016-01-13 12:58:05";s:21:"post_content_filtered";s:0:"";s:11:"post_parent";s:1:"0";s:4:"guid";s:24:"http://wp.siroop.lo/?p=1";s:10:"menu_order";s:1:"0";s:9:"post_type";s:4:"post";s:14:"post_mime_type";s:0:"";s:13:"comment_count";s:1:"1";}"));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
7.0.20.0270.07720.14
7.0.10.0070.08320.24
7.0.00.0030.04320.26
5.6.170.0330.07720.64
5.6.160.0070.04020.43
5.6.150.0070.06718.18
5.6.140.0100.08018.24
5.6.130.0070.08718.29
5.6.120.0130.07320.98
5.6.110.0000.05021.11
5.6.100.0030.06320.98
5.6.90.0000.04320.94
5.6.80.0070.08720.50
5.5.310.0300.04720.51
5.5.300.0030.06718.01
5.5.290.0070.08017.97
5.5.280.0130.07720.72
5.5.270.0000.04320.87
5.5.260.0070.08320.76
5.5.250.0170.06020.77
5.5.240.0170.05020.25

preferences:
138.78 ms | 1398 KiB | 7 Q