3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $val = [str_repeat(mt_rand(), 30)]; echo strlen(json_encode($val)); echo "\n"; echo strlen(gzcompress(json_encode($val)));
based on r6DPV
Output for 5.4.2 - 5.4.4, 5.4.7 - 5.4.8, 5.4.10 - 5.4.11, 5.4.13 - 5.4.17, 5.4.19, 5.4.25 - 5.4.26, 5.4.30, 5.4.35, 5.4.38, 5.4.40, 5.4.42, 5.4.44, 5.5.0 - 5.5.1, 5.5.4, 5.5.6 - 5.5.7, 5.5.18 - 5.5.20, 5.5.24 - 5.5.26, 5.5.35 - 5.5.36, 5.5.38 - 5.6.0, 5.6.2 - 5.6.5, 5.6.7, 5.6.11 - 5.6.12, 5.6.15, 5.6.18, 5.6.22 - 5.6.28, 7.0.1, 7.0.3, 7.0.5 - 7.0.8, 7.1.0
274 24
Output for 5.4.0 - 5.4.1, 5.4.5 - 5.4.6, 5.4.9, 5.4.12, 5.4.18, 5.4.20 - 5.4.24, 5.4.27 - 5.4.28, 5.4.31 - 5.4.34, 5.4.36 - 5.4.37, 5.4.39, 5.4.45, 5.5.2 - 5.5.3, 5.5.5, 5.5.8 - 5.5.9, 5.5.11 - 5.5.16, 5.5.21 - 5.5.23, 5.5.27 - 5.5.34, 5.5.37, 5.6.1, 5.6.6, 5.6.8 - 5.6.10, 5.6.13 - 5.6.14, 5.6.16 - 5.6.17, 5.6.19 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0, 7.0.4, 7.0.9 - 7.0.14
304 26
Output for 7.0.2
304 25
Output for 5.4.41, 5.5.10
304 24
Output for 5.4.29, 5.4.43
244 22
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/oefZf on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/oefZf on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/oefZf on line 2
Process exited with code 255.