3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(15 => null, 16 => true); var_dump(array_key_exists(15, $a)); var_dump(isset($a[15])); var_dump(array_key_exists(16, $a)); var_dump(date_create(time()));

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)
7.1.70.0030.00917.19
7.1.60.0000.02419.33
7.1.50.0170.00716.78
7.1.00.0030.07722.35
7.0.200.0000.01016.77
7.0.140.0030.07022.09
7.0.100.0000.04719.95
7.0.90.0030.06720.00
7.0.80.0070.04019.82
7.0.70.0170.06019.90
7.0.60.0130.04720.01
7.0.50.0230.04320.23
7.0.40.0070.08020.02
7.0.30.0170.07320.13
7.0.20.0070.07020.02
7.0.10.0070.07719.97
7.0.00.0030.05320.09
5.6.280.0030.07321.07
5.6.250.0000.04720.43
5.6.240.0100.04020.54
5.6.230.0030.04020.45
5.6.220.0070.04020.55
5.6.210.0030.04020.50
5.6.200.0030.04321.08
5.6.190.0030.06321.04
5.6.180.0100.07320.88
5.6.170.0070.04020.91
5.6.160.0030.08720.97
5.6.150.0030.07020.88
5.6.140.0100.05721.02
5.6.130.0070.07321.02
5.6.120.0000.06321.07
5.6.110.0170.05020.95
5.6.100.0070.07321.01
5.6.90.0100.07020.98
5.6.80.0170.06320.30
5.6.70.0100.03720.25
5.6.60.0100.07320.43
5.6.50.0100.07320.41
5.6.40.0030.08020.23
5.6.30.0030.08020.36
5.6.20.0100.07720.38
5.6.10.0070.06320.32
5.6.00.0070.07720.30
5.5.380.0000.04320.39
5.5.370.0170.05020.25
5.5.360.0070.03720.47
5.5.350.0030.04020.36
5.5.340.0000.04320.83
5.5.330.0070.04320.86
5.5.320.0070.07020.73
5.5.310.0000.06020.71
5.5.300.0130.07020.72
5.5.290.0100.04720.54
5.5.280.0000.08720.71
5.5.270.0100.08720.82
5.5.260.0130.06720.70
5.5.250.0070.08020.58
5.5.240.0070.04320.21
5.5.230.0070.08320.12
5.5.220.0000.05020.14
5.5.210.0070.07020.19
5.5.200.0030.04720.19
5.5.190.0130.06020.07
5.5.180.0100.07720.17
5.5.160.0170.07320.02
5.5.150.0070.04020.02
5.5.140.0100.05720.16
5.5.130.0230.06720.21
5.5.120.0130.06320.21
5.5.110.0100.07720.18
5.5.100.0070.08020.02
5.5.90.0000.08319.99
5.5.80.0170.07320.07
5.5.70.0070.08320.09
5.5.60.0030.05320.09
5.5.50.0030.04019.90
5.5.40.0070.04020.02
5.5.30.0030.04019.99
5.5.20.0100.05320.00
5.5.10.0030.06019.96
5.5.00.0030.06719.95
5.4.450.0070.06719.52
5.4.440.0030.08319.22
5.4.430.0030.04319.42
5.4.420.0070.07719.22
5.4.410.0070.06718.99
5.4.400.0070.07719.23
5.4.390.0200.07019.03
5.4.380.0030.06019.04
5.4.370.0200.06319.06
5.4.360.0070.06719.13
5.4.350.0170.07018.78
5.4.340.0030.08319.21
5.4.320.0070.05319.07
5.4.310.0100.06318.97
5.4.300.0000.04319.14
5.4.290.0170.06319.06
5.4.280.0100.06719.04
5.4.270.0130.07018.78
5.4.260.0070.07318.81
5.4.250.0130.06719.21
5.4.240.0070.07719.07
5.4.230.0030.07319.21
5.4.220.0000.04319.11
5.4.210.0100.06319.09
5.4.200.0000.04019.11
5.4.190.0000.04318.78
5.4.180.0030.03319.02
5.4.170.0030.03719.18
5.4.160.0000.04018.82
5.4.150.0070.04018.76
5.4.140.0070.04316.31
5.4.130.0030.05016.27
5.4.120.0100.03316.36
5.4.110.0070.07716.23
5.4.100.0100.05716.19
5.4.90.0130.02716.22
5.4.80.0000.08016.20
5.4.70.0100.02716.21
5.4.60.0000.06716.30
5.4.50.0100.06316.23
5.4.40.0030.06316.40
5.4.30.0070.08016.24
5.4.20.0100.06016.28
5.4.10.0100.07016.42
5.4.00.0070.03715.63
5.3.290.0000.06714.54
5.3.280.0100.03714.47
5.3.270.0130.03014.59
5.3.260.0030.03714.59
5.3.250.0070.03714.61
5.3.240.0030.04014.54
5.3.230.0070.06714.61
5.3.220.0070.04714.55
5.3.210.0070.04014.50
5.3.200.0030.08014.47
5.3.190.0100.03714.47
5.3.180.0000.05714.55
5.3.170.0070.07314.55
5.3.160.0070.04014.47
5.3.150.0130.03014.55
5.3.140.0000.04714.47
5.3.130.0070.07314.52
5.3.120.0100.07314.51
5.3.110.0030.08014.50
5.3.100.0070.07014.47
5.3.90.0070.07314.47
5.3.80.0170.06714.47
5.3.70.0000.04314.47
5.3.60.0170.06714.47
5.3.50.0070.05314.47
5.3.40.0000.05314.47
5.3.30.0070.03314.47
5.3.20.0000.07714.47
5.3.10.0130.06014.47
5.3.00.0100.07014.47
5.2.170.0030.04014.47
5.2.160.0100.04314.47
5.2.150.0030.06714.47
5.2.140.0030.03014.47
5.2.130.0070.05714.47
5.2.120.0070.02314.47
5.2.110.0030.06314.47
5.2.100.0030.03014.47
5.2.90.0070.05314.47
5.2.80.0070.06014.47
5.2.70.0100.05314.47
5.2.60.0070.05314.47
5.2.50.0100.06014.47
5.2.40.0030.05014.47
5.2.30.0100.04014.47
5.2.20.0070.06314.47
5.2.10.0100.03314.47
5.2.00.0030.04714.47
5.1.60.0030.02714.47
5.1.50.0030.02714.47
5.1.40.0100.03014.47
5.1.30.0070.05314.47
5.1.20.0100.02014.47
5.1.10.0070.05014.47
5.1.00.0030.05714.47
5.0.50.0130.02714.47
5.0.40.0030.04314.47
5.0.30.0000.04014.47
5.0.20.0000.03714.47
5.0.10.0070.02014.47
5.0.00.0000.04314.47
4.4.90.0000.02314.47
4.4.80.0000.03014.47
4.4.70.0000.03314.47
4.4.60.0070.01714.47
4.4.50.0030.03014.47
4.4.40.0030.04314.47
4.4.30.0000.03314.47
4.4.20.0070.03014.47
4.4.10.0000.03314.47
4.4.00.0070.04714.47
4.3.110.0070.03014.47
4.3.100.0030.02014.47
4.3.90.0030.03314.47
4.3.80.0000.05714.47
4.3.70.0000.04014.47
4.3.60.0000.02714.47
4.3.50.0030.02314.47
4.3.40.0100.03714.47
4.3.30.0030.03014.47
4.3.20.0000.02314.47
4.3.10.0000.02014.47
4.3.00.0030.03314.47

preferences:
32.32 ms | 400 KiB | 5 Q