3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array("4","6","2","ololo"); $time = microtime(true); $i=0; while($i < 50000) { $i++; json_encode($arr); } $time1 = microtime(true) - $time; $time = microtime(true); $i=0; while($i < 50000) { $i++; serialize($arr); } $time2 = microtime(true) - $time; echo '1 took ' . number_format($time1, 3) . "\n"; echo '2 took ' . number_format($time2, 3) . "\n";
Output for 7.1.0
1 took 0.012 2 took 0.015
Output for 7.0.14
1 took 0.012 2 took 0.014
Output for 7.0.0, 7.0.9
1 took 0.009 2 took 0.010
Output for 7.0.8
1 took 0.008 2 took 0.012
Output for 7.0.7
1 took 0.006 2 took 0.008
Output for 7.0.1, 7.0.6
1 took 0.011 2 took 0.013
Output for 7.0.5
1 took 0.009 2 took 0.011
Output for 7.0.4
1 took 0.008 2 took 0.009
Output for 7.0.3
1 took 0.010 2 took 0.012
Output for 7.0.2
1 took 0.007 2 took 0.009
Output for 5.5.22, hhvm-3.12.0
1 took 0.021 2 took 0.031
Output for hhvm-3.10.0
1 took 0.022 2 took 0.030
Output for 5.6.28
1 took 0.027 2 took 0.048
Output for 5.6.24
1 took 0.026 2 took 0.041
Output for 5.6.19, 5.6.23
1 took 0.025 2 took 0.041
Output for 5.6.22
1 took 0.016 2 took 0.032
Output for 5.6.21
1 took 0.026 2 took 0.040
Output for 5.6.20
1 took 0.025 2 took 0.040
Output for 5.6.7, 5.6.18
1 took 0.023 2 took 0.033
Output for 5.4.22, 5.6.17
1 took 0.024 2 took 0.041
Output for 5.6.16
1 took 0.024 2 took 0.039
Output for 5.6.15
1 took 0.023 2 took 0.041
Output for 5.6.14
1 took 0.026 2 took 0.043
Output for 5.4.1 - 5.4.2, 5.5.29, 5.5.32, 5.6.6, 5.6.8, 5.6.13
1 took 0.016 2 took 0.030
Output for 5.5.13, 5.6.12
1 took 0.021 2 took 0.032
Output for 5.6.11
1 took 0.020 2 took 0.034
Output for 5.6.10
1 took 0.026 2 took 0.038
Output for 5.4.14, 5.5.6, 5.6.9
1 took 0.021 2 took 0.036
Output for 5.6.5
1 took 0.022 2 took 0.040
Output for 5.4.36, 5.5.5, 5.6.4
1 took 0.021 2 took 0.035
Output for 5.6.0, 5.6.3
1 took 0.025 2 took 0.042
Output for 5.6.2
1 took 0.017 2 took 0.032
Output for 5.6.1
1 took 0.018 2 took 0.030
Output for 5.5.15, 5.5.38
1 took 0.019 2 took 0.034
Output for 5.5.37
1 took 0.026 2 took 0.042
Output for 5.5.3, 5.5.36
1 took 0.022 2 took 0.038
Output for 5.5.35
1 took 0.018 2 took 0.036
Output for 5.5.34
1 took 0.020 2 took 0.033
Output for 5.5.33
1 took 0.026 2 took 0.045
Output for 5.5.31
1 took 0.025 2 took 0.039
Output for 5.3.22, 5.4.23, 5.5.30
1 took 0.022 2 took 0.034
Output for 5.5.28
1 took 0.021 2 took 0.034
Output for 5.5.23, 5.5.27
1 took 0.024 2 took 0.038
Output for 5.5.11, 5.5.26
1 took 0.021 2 took 0.037
Output for 5.5.10, 5.5.14, 5.5.25
1 took 0.017 2 took 0.031
Output for 5.5.24
1 took 0.022 2 took 0.033
Output for 5.5.21
1 took 0.025 2 took 0.044
Output for 5.5.20
1 took 0.022 2 took 0.041
Output for 5.5.2, 5.5.18 - 5.5.19
1 took 0.024 2 took 0.042
Output for 5.5.16
1 took 0.015 2 took 0.033
Output for 5.5.12
1 took 0.023 2 took 0.040
Output for 5.4.6, 5.4.40, 5.5.9
1 took 0.017 2 took 0.030
Output for 5.5.8
1 took 0.023 2 took 0.039
Output for 5.5.7
1 took 0.019 2 took 0.035
Output for 5.5.4
1 took 0.026 2 took 0.035
Output for 5.4.4, 5.4.18 - 5.4.19, 5.5.1
1 took 0.016 2 took 0.031
Output for 5.5.0
1 took 0.021 2 took 0.040
Output for 5.4.45
1 took 0.018 2 took 0.031
Output for 5.4.44
1 took 0.018 2 took 0.032
Output for 5.4.43
1 took 0.021 2 took 0.033
Output for 5.4.42
1 took 0.023 2 took 0.044
Output for 5.4.41
1 took 0.020 2 took 0.036
Output for 5.4.39
1 took 0.024 2 took 0.043
Output for 5.4.24, 5.4.38
1 took 0.021 2 took 0.038
Output for 5.4.37
1 took 0.023 2 took 0.042
Output for 5.4.35
1 took 0.020 2 took 0.032
Output for 5.4.34
1 took 0.023 2 took 0.036
Output for 5.4.31 - 5.4.32
1 took 0.025 2 took 0.045
Output for 5.4.30
1 took 0.025 2 took 0.046
Output for 5.4.29
1 took 0.022 2 took 0.035
Output for 5.4.16, 5.4.21, 5.4.28
1 took 0.015 2 took 0.030
Output for 5.4.9 - 5.4.10, 5.4.27
1 took 0.025 2 took 0.043
Output for 5.4.26
1 took 0.020 2 took 0.035
Output for 5.4.25
1 took 0.020 2 took 0.037
Output for 5.4.20
1 took 0.019 2 took 0.037
Output for 5.4.17
1 took 0.023 2 took 0.038
Output for 5.4.15
1 took 0.019 2 took 0.038
Output for 5.4.13
1 took 0.024 2 took 0.034
Output for 5.4.12
1 took 0.025 2 took 0.047
Output for 5.4.11
1 took 0.025 2 took 0.038
Output for 5.4.8
1 took 0.015 2 took 0.029
Output for 5.4.7
1 took 0.026 2 took 0.037
Output for 5.4.5
1 took 0.015 2 took 0.028
Output for 5.4.3
1 took 0.022 2 took 0.037
Output for 5.4.0
1 took 0.017 2 took 0.029
Output for 5.3.26, 5.3.29
1 took 0.023 2 took 0.031
Output for 5.3.20, 5.3.28
1 took 0.024 2 took 0.030
Output for 5.2.11, 5.3.25, 5.3.27
1 took 0.020 2 took 0.029
Output for 5.3.14, 5.3.24
1 took 0.020 2 took 0.030
Output for 5.3.23
1 took 0.031 2 took 0.040
Output for 5.3.21
1 took 0.023 2 took 0.034
Output for 5.3.19
1 took 0.025 2 took 0.032
Output for 5.3.10, 5.3.18
1 took 0.019 2 took 0.027
Output for 5.3.17
1 took 0.025 2 took 0.035
Output for 5.2.0, 5.3.0, 5.3.4, 5.3.9, 5.3.11 - 5.3.12, 5.3.16
1 took 0.019 2 took 0.028
Output for 5.3.15
1 took 0.018 2 took 0.026
Output for 5.2.3, 5.2.7, 5.2.15, 5.3.13
1 took 0.020 2 took 0.028
Output for 5.3.8
1 took 0.018 2 took 0.027
Output for 5.2.4, 5.3.7
1 took 0.018 2 took 0.025
Output for 5.3.3, 5.3.6
1 took 0.028 2 took 0.037
Output for 5.3.5
1 took 0.018 2 took 0.028
Output for 5.3.2
1 took 0.027 2 took 0.037
Output for 5.3.1
1 took 0.027 2 took 0.034
Output for 5.2.17
1 took 0.021 2 took 0.028
Output for 5.2.1, 5.2.16
1 took 0.020 2 took 0.027
Output for 5.2.14
1 took 0.030 2 took 0.038
Output for 5.2.13
1 took 0.024 2 took 0.032
Output for 5.2.12
1 took 0.030 2 took 0.037
Output for 5.2.10
1 took 0.026 2 took 0.034
Output for 5.2.9
1 took 0.017 2 took 0.025
Output for 5.2.8
1 took 0.017 2 took 0.024
Output for 5.2.6
1 took 0.027 2 took 0.032
Output for 5.2.5
1 took 0.032 2 took 0.039
Output for 5.2.2
1 took 0.031 2 took 0.033
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/1VWCn on line 10
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/1VWCn on line 10
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/1VWCn on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/1VWCn on line 10