3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = NULL; $b = NULL; $c = NULL; var_dump(isset($a)); var_dump(isset($b)); var_dump(empty($c)); var_dump(empty($d));

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)
8.3.60.0070.00718.27
8.3.50.0100.00821.92
8.3.40.0090.00918.73
8.3.30.0070.00718.93
8.3.20.0080.00020.33
8.3.10.0040.00422.09
8.3.00.0080.00022.46
8.2.180.0030.01316.63
8.2.170.0070.00722.96
8.2.160.0070.00720.79
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0040.00421.19
8.2.110.0070.00322.00
8.2.100.0090.00319.32
8.2.90.0060.00319.09
8.2.80.0000.00817.97
8.2.70.0030.00617.50
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0040.00418.22
8.2.30.0040.00417.99
8.2.20.0050.00317.65
8.2.10.0030.00519.40
8.2.00.0060.00317.50
8.1.280.0170.00325.92
8.1.270.0040.00422.05
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0050.00523.88
8.1.230.0040.00719.21
8.1.220.0050.00317.74
8.1.210.0080.00018.77
8.1.200.0050.00517.09
8.1.190.0090.00317.51
8.1.180.0000.00818.65
8.1.170.0040.00418.60
8.1.160.0040.00423.70
8.1.150.0000.00718.45
8.1.140.0000.00717.26
8.1.130.0030.00317.65
8.1.120.0070.00017.36
8.1.110.0000.00717.29
8.1.100.0000.00717.37
8.1.90.0040.00317.30
8.1.80.0070.00017.41
8.1.70.0060.00017.40
8.1.60.0000.00817.49
8.1.50.0000.00717.51
8.1.40.0050.00317.34
8.1.30.0030.00617.55
8.1.20.0030.00617.51
8.1.10.0070.00017.36
8.1.00.0000.00817.36
8.0.300.0030.00318.77
8.0.290.0070.00017.04
8.0.280.0030.00318.38
8.0.270.0040.00417.07
8.0.260.0000.00916.75
8.0.250.0000.00716.86
8.0.240.0000.00716.95
8.0.230.0070.00016.75
8.0.220.0030.00316.73
8.0.210.0040.00416.72
8.0.200.0030.00316.95
8.0.190.0040.00416.89
8.0.180.0050.00316.68
8.0.170.0080.00016.79
8.0.160.0040.00416.83
8.0.150.0070.00016.68
8.0.140.0040.00416.84
8.0.130.0030.00313.22
8.0.120.0040.00416.83
8.0.110.0070.00016.73
8.0.100.0040.00416.70
8.0.90.0050.00316.70
8.0.80.0000.01516.83
8.0.70.0000.00716.89
8.0.60.0030.00516.64
8.0.50.0040.00416.76
8.0.30.0090.01217.07
8.0.20.0190.00217.40
8.0.10.0030.00516.94
8.0.00.0110.00916.70
7.4.330.0030.00315.00
7.4.320.0030.00316.54
7.4.300.0000.00716.52
7.4.290.0030.00316.43
7.4.280.0070.00016.32
7.4.270.0050.00216.43
7.4.260.0070.00016.49
7.4.250.0080.00016.49
7.4.240.0030.00316.49
7.4.230.0070.00016.61
7.4.220.0100.00716.62
7.4.210.0060.01416.51
7.4.200.0030.00316.34
7.4.190.0070.00016.64
7.4.160.0090.00616.35
7.4.150.0100.00717.40
7.4.140.0090.00917.86
7.4.130.0080.01116.46
7.4.120.0110.00816.39
7.4.110.0090.00916.60
7.4.100.0110.00816.47
7.4.90.0040.01316.49
7.4.80.0070.01419.39
7.4.70.0110.01216.39
7.4.60.0120.00416.33
7.4.50.0060.00316.06
7.4.40.0030.01322.77
7.4.30.0060.00916.10
7.4.00.0100.00615.10
7.3.330.0050.00013.06
7.3.320.0020.00212.99
7.3.310.0000.00615.98
7.3.300.0030.00315.99
7.3.290.0120.00316.04
7.3.280.0060.00916.15
7.3.270.0100.00617.40
7.3.260.0140.00316.16
7.3.250.0110.00916.43
7.3.240.0080.00816.55
7.3.230.0070.01016.39
7.3.210.0060.01016.15
7.3.200.0030.01319.39
7.3.190.0110.00616.44
7.3.180.0140.00716.40
7.3.170.0090.00616.27
7.3.160.0110.01116.29
7.3.120.0040.01114.54
7.3.10.0050.01416.03
7.3.00.0170.01016.35
7.2.330.0030.02116.30
7.2.320.0100.00716.63
7.2.310.0040.01216.56
7.2.300.0070.01116.61
7.2.290.0160.00016.63
7.2.130.0100.01016.05
7.2.120.0130.00616.15
7.2.110.0120.00816.42
7.2.100.0100.01016.23
7.2.90.0200.01116.59
7.2.80.0130.00616.68
7.2.70.0100.00716.27
7.2.60.0100.00516.59
7.2.50.0160.00916.68
7.2.40.0180.00016.18
7.2.30.0180.00416.39
7.2.20.0090.00916.15
7.2.10.0100.00716.27
7.2.00.0120.00616.46
7.1.250.0110.00615.08
7.1.200.0060.00915.53
7.1.100.0030.00918.02
7.1.70.0000.00717.10
7.1.60.0070.01719.82
7.1.50.0100.01734.66
7.1.00.0100.07022.54
7.0.200.0000.00716.74
7.0.140.0000.07722.09
7.0.60.0000.08719.77
7.0.50.0070.03717.85
7.0.40.0070.04720.27
7.0.30.0330.05020.04
7.0.20.0270.05320.17
7.0.10.0130.04720.00
7.0.00.0070.08320.20
5.6.280.0070.06721.07
5.6.210.0170.07020.69
5.6.200.0070.08318.10
5.6.190.0100.03720.63
5.6.180.3530.04020.45
5.6.170.0470.07320.33
5.6.160.0130.06020.40
5.6.150.0070.08318.08
5.6.140.0070.05018.21
5.6.130.0100.07318.23
5.6.120.0030.04321.14
5.6.110.0130.07720.97
5.6.100.0100.08321.10
5.6.90.0070.08020.94
5.6.80.0030.06020.37
5.6.70.0330.05320.34
5.5.350.0100.03020.42
5.5.340.0030.08018.02
5.5.330.0070.08020.19
5.5.320.0230.05320.28
5.5.310.0230.03320.23
5.5.300.0130.07318.00
5.5.290.0030.04317.92
5.5.280.0000.09020.67
5.5.270.0070.05320.86
5.5.260.0100.07020.66
5.5.250.0130.08020.68
5.5.240.0130.07320.15
5.4.450.0530.06319.52
5.4.440.0500.06019.51
5.4.430.0600.06019.64
5.4.420.0270.06019.10
5.4.410.0530.05319.45
5.4.400.0800.00018.51
5.4.390.0830.00018.61
5.4.380.0230.05318.62
5.4.370.0370.05718.71
5.4.360.0300.05718.58
5.4.350.0330.04718.72
5.4.340.0230.05318.46
5.4.320.0060.04212.45
5.4.310.0080.03712.45
5.4.300.0070.04012.45
5.4.290.0070.04612.45
5.4.280.0090.04012.35
5.4.270.0070.04812.34
5.4.260.0130.04718.86
5.4.250.0100.06018.88
5.4.240.0070.06018.74
5.4.230.0070.05718.73
5.4.220.0100.05019.04
5.4.210.0070.05018.88
5.4.200.0100.04718.76
5.4.190.0030.05318.77
5.4.180.0070.05318.89
5.4.170.0070.08018.98
5.4.160.0130.07318.98
5.4.150.0030.07018.88
5.4.140.0170.05716.40
5.4.130.0130.05316.23
5.4.120.0030.07716.26
5.4.110.0100.07016.39
5.4.100.0070.07316.32
5.4.90.0130.06016.52
5.4.80.0170.06316.48
5.4.70.0100.04316.34
5.4.60.0070.04716.31
5.4.50.0100.04316.46
5.4.40.0170.05016.35
5.4.30.0070.06716.46
5.4.20.0100.06716.49
5.4.10.0130.07016.36
5.4.00.0130.05015.66
5.3.290.0090.03912.80
5.3.280.0100.05014.54
5.3.270.0100.07314.61
5.3.260.0030.06314.31
5.3.250.0070.05714.62
5.3.240.0070.05314.30
5.3.230.0070.05014.59
5.3.220.0100.07314.65
5.3.210.0070.06314.62
5.3.200.0030.08014.66
5.3.190.0070.05014.47
5.3.180.0100.05014.61
5.3.170.0100.05014.71
5.3.160.0130.04314.59
5.3.150.0130.04714.48
5.3.140.0130.04314.57
5.3.130.0100.06714.56
5.3.120.0100.05714.64
5.3.110.0070.05714.56
5.3.100.0030.07314.05
5.3.90.0030.06314.03
5.3.80.0030.05313.85
5.3.70.0070.05013.87
5.3.60.0100.05314.01
5.3.50.0100.05013.83
5.3.40.0030.05313.80
5.3.30.0070.05013.84
5.3.20.0070.05013.84
5.3.10.0100.06713.57
5.3.00.0070.07313.68
5.2.170.0070.04011.16
5.2.160.0030.04011.03
5.2.150.0070.04311.13
5.2.140.0100.03711.13
5.2.130.0030.04011.11
5.2.120.0200.04011.03
5.2.110.0100.04011.03
5.2.100.0100.04311.13
5.2.90.0100.03711.19
5.2.80.0130.05311.11
5.2.70.0030.04710.92
5.2.60.0100.03710.81
5.2.50.0070.04011.03
5.2.40.0100.03311.00
5.2.30.0030.04310.99
5.2.20.0070.04711.06
5.2.10.0000.04311.02
5.2.00.0030.06010.47
5.1.60.0070.03710.14
5.1.50.0070.0339.76
5.1.40.0030.03310.09
5.1.30.0000.06310.21
5.1.20.0030.04010.23
5.1.10.0070.0339.97
5.1.00.0070.03310.11
5.0.50.0030.0278.50
5.0.40.0030.0278.33
5.0.30.0070.0378.28
5.0.20.0030.0338.16
5.0.10.0000.0438.36
5.0.00.0030.0578.11
4.4.90.0030.0277.02
4.4.80.0100.0177.02
4.4.70.0000.0237.02
4.4.60.0000.0237.02
4.4.50.0000.0237.02
4.4.40.0070.0307.02
4.4.30.0030.0207.02
4.4.20.0030.0237.02
4.4.10.0000.0237.02
4.4.00.0070.0307.02
4.3.110.0030.0237.02
4.3.100.0030.0207.02
4.3.90.0030.0207.02
4.3.80.0070.0307.02
4.3.70.0000.0237.02
4.3.60.0000.0237.02
4.3.50.0070.0207.02
4.3.40.0000.0377.02
4.3.30.0000.0237.02
4.3.20.0070.0207.02
4.3.10.0030.0237.02
4.3.00.0170.0309.33

preferences:
46.05 ms | 401 KiB | 5 Q