3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass(); if ($a == null) { echo "null"; print_r($a); } else if (empty($a)){ echo "empty"; print_r($a); }else if (isset($a)){ echo "set"; print_r($a); }

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)
8.3.40.0120.00318.54
8.3.30.0100.00318.92
8.3.20.0160.00320.20
8.3.10.0070.00022.04
8.3.00.0070.00022.45
8.2.170.0110.00422.96
8.2.160.0080.00820.95
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0090.00926.16
8.2.120.0000.00819.36
8.2.110.0130.00320.94
8.2.100.0080.00317.91
8.2.90.0030.00519.21
8.2.80.0030.00617.97
8.2.70.0090.00017.50
8.2.60.0040.00418.04
8.2.50.0060.00318.07
8.2.40.0100.00017.91
8.2.30.0060.00317.93
8.2.20.0000.00817.65
8.2.10.0030.00517.66
8.2.00.0000.00817.65
8.1.270.0080.00022.06
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0000.00921.21
8.1.230.0090.00317.45
8.1.220.0030.00617.74
8.1.210.0050.00318.77
8.1.200.0040.00417.36
8.1.190.0000.00917.10
8.1.180.0000.00818.10
8.1.170.0040.00418.61
8.1.160.0040.00422.04
8.1.150.0040.00418.56
8.1.140.0070.00017.44
8.1.130.0080.00017.82
8.1.120.0080.00017.48
8.1.110.0080.00017.35
8.1.100.0050.00217.45
8.1.90.0040.00417.38
8.1.80.0030.00517.34
8.1.70.0050.00217.41
8.1.60.0060.00317.59
8.1.50.0000.00817.50
8.1.40.0020.00517.53
8.1.30.0050.00217.61
8.1.20.0040.00417.52
8.1.10.0050.00317.60
8.1.00.0040.00417.51
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0080.00018.48
8.0.270.0040.00417.31
8.0.260.0060.00016.73
8.0.250.0000.00716.92
8.0.240.0000.00716.82
8.0.230.0030.00316.95
8.0.220.0050.00216.82
8.0.210.0000.00716.77
8.0.200.0060.00016.86
8.0.190.0000.00816.88
8.0.180.0030.00916.80
8.0.170.0020.00516.86
8.0.160.0000.00716.82
8.0.150.0000.00816.84
8.0.140.0070.00016.86
8.0.130.0030.00313.36
8.0.120.0030.00516.89
8.0.110.0000.00716.89
8.0.100.0000.00716.78
8.0.90.0070.00016.74
8.0.80.0030.01416.84
8.0.70.0000.00716.82
8.0.60.0000.00716.76
8.0.50.0000.00716.82
8.0.30.0160.00816.91
8.0.20.0060.01217.40
8.0.10.0000.00716.93
8.0.00.0110.00616.75
7.4.330.0000.00615.15
7.4.320.0000.00616.45
7.4.300.0060.00016.51
7.4.290.0000.00716.54
7.4.280.0030.00316.61
7.4.270.0000.00716.50
7.4.260.0030.00616.39
7.4.250.0050.00216.55
7.4.240.0020.00516.55
7.4.230.0030.00316.41
7.4.220.0000.02516.56
7.4.210.0050.00916.52
7.4.200.0000.00716.61
7.4.190.0070.00016.30
7.4.160.0090.00616.49
7.4.150.0030.01317.40
7.4.140.0090.01017.86
7.4.130.0140.00616.50
7.4.120.0090.00816.45
7.4.110.0070.01016.43
7.4.100.0030.01716.53
7.4.90.0030.01716.59
7.4.80.0090.00919.39
7.4.70.0070.01116.60
7.4.60.0130.00416.46
7.4.50.0000.00816.47
7.4.40.0100.00622.77
7.4.30.0070.01016.54
7.4.00.0110.00414.85
7.3.330.0000.00513.02
7.3.320.0000.00712.93
7.3.310.0050.00216.17
7.3.300.0070.00016.24
7.3.290.0160.00316.25
7.3.280.0110.00716.20
7.3.270.0110.00617.40
7.3.260.0040.01516.15
7.3.250.0160.00716.48
7.3.240.0130.00416.32
7.3.230.0140.00716.39
7.3.210.0060.00916.29
7.3.200.0100.00719.39
7.3.190.0120.00616.43
7.3.180.0090.00616.17
7.3.170.0070.01016.27
7.3.160.0090.00916.40
7.3.120.0070.01014.75
7.2.330.0100.00716.60
7.2.320.0070.01116.53
7.2.310.0070.01016.54
7.2.300.0030.01516.45
7.2.290.0060.01016.39
7.2.60.0040.01216.73
7.1.200.0000.01215.83
7.1.70.0000.01017.14
7.1.60.0140.01119.82
7.1.50.0100.01416.96
7.1.00.0100.07022.44
7.0.200.0100.01016.75
7.0.140.0000.05021.91
7.0.60.0070.03720.01
7.0.50.0070.08017.78
7.0.40.0070.06020.12
7.0.30.0270.05020.21
7.0.20.0230.04720.05
7.0.10.0200.04320.04
7.0.00.0070.09020.12
5.6.280.0070.07020.89
5.6.210.0030.08020.52
5.6.200.0130.07018.10
5.6.190.0100.07320.63
5.6.180.3800.03320.58
5.6.170.0270.07720.41
5.6.160.0000.08020.49
5.6.150.0070.05718.18
5.6.140.0130.07018.18
5.6.130.0070.05718.20
5.6.120.0070.08720.89
5.6.110.0070.03721.04
5.6.100.0030.08720.98
5.6.90.0070.04020.97
5.6.80.0030.06320.53
5.5.350.0100.08020.32
5.5.340.0070.08017.91
5.5.330.0070.04020.21
5.5.320.0330.07020.31
5.5.310.0330.08020.18
5.5.300.0030.05318.02
5.5.290.0070.08018.02
5.5.280.0070.04020.77
5.5.270.0030.06020.86
5.5.260.0100.07020.75
5.5.250.0130.07320.70
5.5.240.0100.08020.23
5.4.450.0200.05019.45
5.4.440.0270.06019.58
5.4.430.0100.05319.31
5.4.420.0130.05019.46
5.4.410.0000.06319.39
5.4.400.0800.00018.64
5.4.390.0730.00018.65
5.4.380.0270.05718.66
5.4.370.0430.04018.65
5.4.360.0130.04318.52
5.4.350.0370.05318.72
5.4.340.0070.05018.78
5.4.320.0050.04012.45
5.4.310.0060.03712.45
5.4.300.0060.03712.46
5.4.290.0090.04112.45
5.4.280.0080.03612.35
5.4.270.0000.05718.88
5.4.260.0100.04718.73
5.4.250.0100.04718.65
5.4.240.0100.05019.00
5.4.230.0130.04718.88
5.4.220.0100.05018.70
5.4.210.0030.05318.89
5.4.200.0000.05718.70
5.4.190.0070.05018.64
5.4.180.0030.05319.02
5.4.170.0170.04318.74
5.4.160.0130.06718.91
5.4.150.0070.05318.71
5.4.140.0070.05016.16
5.4.130.0100.04316.50
5.4.120.0130.07016.28
5.4.110.0100.04716.21
5.4.100.0100.05016.43
5.4.90.0130.04016.24
5.4.80.0030.05016.33
5.4.70.0130.05016.27
5.4.60.0130.05016.35
5.4.50.0100.04316.18
5.4.40.0100.04716.32
5.4.30.0070.05316.21
5.4.20.0100.05716.36
5.4.10.0070.05016.39
5.4.00.0070.04715.97
5.3.290.0060.04112.80
5.3.280.0030.05314.45
5.3.270.0070.05314.30
5.3.260.0100.05014.38
5.3.250.0070.05014.61
5.3.240.0030.05314.64
5.3.230.0100.04714.30
5.3.220.0030.05014.57
5.3.210.0070.05014.59
5.3.200.0100.04714.57
5.3.190.0070.05014.34
5.3.180.0070.05014.61
5.3.170.0070.04714.40
5.3.160.0170.05014.43
5.3.150.0100.05714.61
5.3.140.0100.04714.64
5.3.130.0070.05014.56
5.3.120.0070.06714.43
5.3.110.0130.04714.32
5.3.100.0130.04313.95
5.3.90.0170.04013.79
5.3.80.0070.04714.11
5.3.70.0070.04713.86
5.3.60.0100.05314.02
5.3.50.0100.04313.78
5.3.40.0070.04713.64
5.3.30.0130.04013.92
5.3.20.0130.05313.46
5.3.10.0030.05013.66
5.3.00.0030.05313.79
5.2.170.0030.04310.98
5.2.160.0030.04311.30
5.2.150.0070.04011.14
5.2.140.0100.03711.14
5.2.130.0100.03311.00
5.2.120.0030.04011.02
5.2.110.0070.03711.21
5.2.100.0030.04011.09
5.2.90.0070.03711.00
5.2.80.0170.04010.92
5.2.70.0070.04011.09
5.2.60.0030.04011.15
5.2.50.0070.04011.02
5.2.40.0070.03711.14
5.2.30.0070.05010.98
5.2.20.0070.03711.11
5.2.10.0030.04011.04
5.2.00.0070.03710.78
5.1.60.0000.0379.90
5.1.50.0000.04010.04
5.1.40.0030.03310.07
5.1.30.0070.03310.41
5.1.20.0070.03310.56
5.1.10.0100.03010.30
5.1.00.0030.03710.03
5.0.50.0030.0308.69
5.0.40.0070.0308.37
5.0.30.0030.0478.16
5.0.20.0030.0278.02
5.0.10.0100.0208.11
5.0.00.0000.0438.34
4.4.90.0070.0177.24
4.4.80.0000.0237.24
4.4.70.0030.0207.24
4.4.60.0070.0177.24
4.4.50.0030.0207.24
4.4.40.0070.0337.24
4.4.30.0030.0207.24
4.4.20.0000.0237.24
4.4.10.0000.0237.24
4.4.00.0030.0337.24
4.3.110.0030.0237.24
4.3.100.0030.0207.24
4.3.90.0000.0237.24
4.3.80.0000.0337.24
4.3.70.0070.0207.24
4.3.60.0000.0207.24
4.3.50.0030.0207.24
4.3.40.0030.0307.24
4.3.30.0000.0237.24
4.3.20.0000.0237.24
4.3.10.0000.0237.24
4.3.00.0130.0237.75

preferences:
50.86 ms | 400 KiB | 5 Q