3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['a'=>'']; $b = ''; $c = null; var_dump(empty($b)); var_dump(empty($c)); var_dump(empty($a['a'])); var_dump(empty($a['b']));

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)
8.3.40.0110.00418.79
8.3.30.0090.00619.00
8.3.20.0040.00420.13
8.3.10.0040.00421.96
8.3.00.0070.00020.68
8.2.170.0110.00322.96
8.2.160.0100.00319.20
8.2.150.0030.00624.18
8.2.140.0050.00324.66
8.2.130.0070.00726.16
8.2.120.0060.00319.54
8.2.110.0060.00322.20
8.2.100.0080.00318.03
8.2.90.0000.00818.92
8.2.80.0020.00517.97
8.2.70.0040.00417.50
8.2.60.0000.00917.93
8.2.50.0040.00418.07
8.2.40.0050.00218.28
8.2.30.0050.00317.93
8.2.20.0050.00217.61
8.2.10.0040.00417.66
8.2.00.0030.00617.64
8.1.270.0050.00318.63
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0090.00023.82
8.1.230.0000.01218.89
8.1.220.0060.00317.74
8.1.210.0030.00518.77
8.1.200.0100.00017.13
8.1.190.0080.00017.30
8.1.180.0070.00018.80
8.1.170.0000.00918.51
8.1.160.0000.00822.24
8.1.150.0050.00318.53
8.1.140.0000.00717.41
8.1.130.0000.00717.83
8.1.120.0000.00717.39
8.1.110.0050.00317.29
8.1.100.0040.00417.41
8.1.90.0000.00817.39
8.1.80.0000.00717.40
8.1.70.0030.00317.34
8.1.60.0040.00417.42
8.1.50.0000.00817.40
8.1.40.0070.00017.41
8.1.30.0040.00417.58
8.1.20.0000.00817.65
8.1.10.0070.00317.52
8.1.00.0060.00317.44
8.0.300.0070.00018.77
8.0.290.0030.00317.05
8.0.280.0070.00018.36
8.0.270.0030.00317.19
8.0.260.0030.00516.80
8.0.250.0000.00716.91
8.0.240.0080.00016.84
8.0.230.0030.00316.79
8.0.220.0030.00316.85
8.0.210.0070.00016.84
8.0.200.0000.00716.74
8.0.190.0030.00316.87
8.0.180.0050.00316.85
8.0.170.0050.00316.85
8.0.160.0050.00216.94
8.0.150.0040.00416.77
8.0.140.0040.00416.79
8.0.130.0000.00513.32
8.0.120.0030.00616.69
8.0.110.0070.00016.71
8.0.100.0070.00016.87
8.0.90.0000.00716.82
8.0.80.0090.00616.82
8.0.70.0000.00716.73
8.0.60.0080.00016.88
8.0.50.0050.00316.88
8.0.30.0120.00916.97
8.0.20.0030.01517.40
8.0.10.0030.00517.01
8.0.00.0090.01216.74
7.4.330.0000.00415.00
7.4.320.0030.00316.53
7.4.300.0060.00016.41
7.4.290.0060.00016.53
7.4.280.0000.00816.46
7.4.270.0000.00716.52
7.4.260.0030.00316.52
7.4.250.0040.00316.30
7.4.240.0050.00216.50
7.4.230.0030.00516.42
7.4.220.0030.01416.30
7.4.210.0090.00516.43
7.4.200.0000.00716.43
7.4.190.0030.00316.50
7.4.160.0090.00616.40
7.4.150.0140.00317.40
7.4.140.0090.00817.86
7.4.130.0130.00716.33
7.4.120.0120.00516.44
7.4.110.0030.01316.35
7.4.100.0170.00016.32
7.4.90.0130.01016.20
7.4.80.0080.01319.39
7.4.70.0060.01016.25
7.4.60.0080.00816.39
7.4.50.0040.00416.30
7.4.40.0060.01022.77
7.4.30.0110.00616.21
7.4.00.0070.00914.61
7.3.330.0000.00513.04
7.3.320.0050.00012.94
7.3.310.0000.00616.19
7.3.300.0030.00316.16
7.3.290.0030.01216.23
7.3.280.0060.01016.19
7.3.270.0130.00317.40
7.3.260.0090.01116.09
7.3.250.0110.00616.28
7.3.240.0170.00616.21
7.3.230.0100.00616.39
7.3.210.0110.00616.35
7.3.200.0150.00719.39
7.3.190.0080.00916.19
7.3.180.0100.01016.09
7.3.170.0120.00916.27
7.3.160.0090.01616.46
7.3.120.0070.00914.49
7.3.110.0090.00914.87
7.3.100.0070.00314.76
7.3.90.0000.01314.56
7.3.80.0090.00614.48
7.3.70.0040.00814.65
7.3.60.0030.00614.41
7.3.50.0060.00614.51
7.3.40.0070.00714.53
7.3.30.0040.01514.61
7.3.20.0060.00916.43
7.3.10.0030.00716.17
7.3.00.0060.00616.63
7.2.330.0180.00016.53
7.2.320.0080.01116.67
7.2.310.0100.00716.38
7.2.300.0060.01016.63
7.2.290.0060.01016.55
7.2.250.0100.00614.78
7.2.240.0100.00714.85
7.2.230.0050.00514.80
7.2.220.0060.00614.70
7.2.210.0140.00314.86
7.2.200.0090.00914.47
7.2.190.0030.00714.25
7.2.180.0030.00914.77
7.2.170.0040.01514.59
7.2.60.0060.01016.73
7.2.00.0000.01119.07
7.1.330.0060.00615.65
7.1.320.0040.01115.51
7.1.310.0090.00615.74
7.1.300.0100.00715.55
7.1.290.0030.00915.42
7.1.280.0090.00615.43
7.1.270.0060.00915.61
7.1.260.0000.00915.63
7.1.200.0030.00315.42
7.1.100.0000.01317.77
7.1.70.0070.00717.07
7.1.60.0100.01419.82
7.1.50.0160.00616.69
7.1.00.0070.05722.43
7.0.200.0550.00714.67
7.0.140.0030.07322.22
7.0.60.0070.07719.78
7.0.50.0130.04017.80
7.0.40.0100.03720.04
7.0.30.0300.07720.04
7.0.20.0300.04020.13
7.0.10.0130.04320.01
7.0.00.0100.03720.03
5.6.280.0030.07320.90
5.6.210.0130.06320.50
5.6.200.0030.04018.19
5.6.190.0130.05020.45
5.6.180.0200.04020.67
5.6.170.0330.07720.41
5.6.160.0070.04020.54
5.6.150.0070.05018.18
5.6.140.0070.03718.15
5.6.130.0030.04718.08
5.6.120.0000.04720.99
5.6.110.0100.08321.08
5.6.100.0030.04321.01
5.6.90.0100.07320.98
5.6.80.0200.06020.40
5.5.350.0130.07020.43
5.5.340.0130.07318.02
5.5.330.0000.05720.25
5.5.320.0370.07020.28
5.5.310.0330.04020.30
5.5.300.0070.07017.95
5.5.290.0100.07718.02
5.5.280.0030.09020.97
5.5.270.0030.07020.73
5.5.260.0130.08020.86
5.5.250.0100.08020.79
5.5.240.3930.03020.14
5.4.450.0600.06319.61
5.4.440.0770.07319.41
5.4.430.0400.07019.64
5.4.420.0170.05319.47
5.4.410.0670.05719.50
5.4.400.0130.05018.79
5.4.390.1170.05018.64
5.4.380.0230.06718.77
5.4.370.0030.06018.50
5.4.360.0130.05318.52
5.4.350.0090.04111.97
5.4.340.0090.05511.97
5.4.320.0060.03612.45
5.4.310.0050.04012.45
5.4.300.0060.04212.45
5.4.290.0010.04212.45
5.4.280.0060.03412.34
5.4.270.0040.04112.35
5.4.260.0060.03712.34
5.4.250.0130.07318.93
5.4.240.0300.05318.73
5.4.230.0100.05018.89
5.4.220.0130.06018.88
5.4.210.0130.06718.66
5.4.200.0070.05719.02
5.4.190.0100.06018.91
5.4.180.0070.05318.64
5.4.170.0130.05019.02
5.4.160.0070.05318.89
5.4.150.0130.04718.66
5.4.140.0030.05316.27
5.4.130.0000.05716.48
5.4.120.0030.05716.25
5.4.110.0030.07716.25
5.4.100.0100.06316.42
5.4.90.0070.04716.36
5.4.80.0030.05016.38
5.4.70.0030.05016.27
5.4.60.0100.04716.32
5.4.50.0070.04716.46
5.4.40.0070.05016.44
5.4.30.0070.04716.46
5.4.20.0030.05316.31
5.4.10.0200.04016.38
5.4.00.0070.05315.74
5.3.290.0030.04212.80
5.3.280.0170.05014.60
5.3.270.0100.05014.49
5.3.260.0130.07014.62
5.3.250.0030.05314.46
5.3.240.0170.04014.63
5.3.230.0100.04714.48
5.3.220.0230.04014.45
5.3.210.0000.06014.46
5.3.200.0100.04714.44
5.3.190.0130.04314.56
5.3.180.0100.05314.58
5.3.170.0100.04714.58
5.3.160.0070.05314.42
5.3.150.0030.05714.57
5.3.140.0100.04714.57
5.3.130.0100.04714.55
5.3.120.0200.04014.64
5.3.110.0070.05014.64
5.3.100.0130.04714.19
5.3.90.0100.05014.02
5.3.80.0200.05313.96
5.3.70.0070.04713.72
5.3.60.0030.05314.15
5.3.50.0070.05313.84
5.3.40.0030.05313.96
5.3.30.0130.04313.76
5.3.20.0030.05313.61
5.3.10.0000.05313.67
5.3.00.0130.04313.56
5.2.170.0070.04011.15
5.2.160.0030.04011.15
5.2.150.0070.03711.07
5.2.140.0000.04311.14
5.2.130.0130.03310.98
5.2.120.0030.04010.93
5.2.110.0100.04011.11
5.2.100.0030.04011.11
5.2.90.0130.04711.12
5.2.80.0100.03711.09
5.2.70.0100.05011.20
5.2.60.0170.03011.20
5.2.50.0000.05011.04
5.2.40.0070.03710.88
5.2.30.0030.04710.75
5.2.20.0100.03310.97
5.2.10.0030.04010.77
5.2.00.0030.04310.55
5.1.60.0030.0339.91
5.1.50.0000.03710.02
5.1.40.0130.0279.86
5.1.30.0030.03710.54
5.1.20.0130.03010.43
5.1.10.0100.0439.91
5.1.00.0030.04010.13
5.0.50.0030.0278.78
5.0.40.0070.0238.29
5.0.30.0000.0438.29
5.0.20.0030.0238.10
5.0.10.0030.0278.00
5.0.00.0070.0378.10
4.4.90.0130.0107.18
4.4.80.0030.0207.18
4.4.70.0070.0237.18
4.4.60.0070.0177.18
4.4.50.0030.0237.18
4.4.40.0000.0337.18
4.4.30.0030.0207.18
4.4.20.0030.0237.18
4.4.10.0030.0277.18
4.4.00.0030.0307.18
4.3.110.0070.0177.18
4.3.100.0000.0237.18
4.3.90.0070.0137.18
4.3.80.0000.0337.18
4.3.70.0030.0207.18
4.3.60.0030.0177.18
4.3.50.0070.0177.18
4.3.40.0000.0337.18
4.3.30.0070.0177.18
4.3.20.0070.0237.18
4.3.10.0030.0237.18
4.3.00.0000.0276.61

preferences:
42.71 ms | 400 KiB | 5 Q