3v4l.org

run code in 300+ PHP versions simultaneously
<?php foreach(get_defined_vars()as $key => $v) { unset($GLOBALS[$key]); } unset($key, $v); $a=5; $b = 6; $count = count(get_defined_vars()); echo $count; $vars=array_slice($b, 1); var_dump($vars);

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)
8.3.60.0060.00918.55
8.3.50.0120.00721.27
8.3.40.0100.00618.84
8.3.30.0100.00720.33
8.3.20.0000.00720.33
8.3.10.0070.00022.09
8.3.00.0080.00022.37
8.2.180.0170.00016.50
8.2.170.0070.01422.96
8.2.160.0000.01422.05
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0030.00526.16
8.2.120.0040.00420.94
8.2.110.0060.00322.20
8.2.100.0090.00317.78
8.2.90.0040.00418.03
8.2.80.0040.00417.97
8.2.70.0060.00317.75
8.2.60.0080.00017.80
8.2.50.0030.00619.11
8.2.40.0030.00618.15
8.2.30.0000.00719.48
8.2.20.0050.00317.74
8.2.10.0000.00717.71
8.2.00.0100.00017.72
8.1.280.0070.01125.92
8.1.270.0000.00723.99
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0040.00420.75
8.1.230.0080.00420.91
8.1.220.0040.00417.79
8.1.210.0000.00818.97
8.1.200.0030.00617.35
8.1.190.0030.00617.64
8.1.180.0060.00318.10
8.1.170.0000.00818.64
8.1.160.0040.00418.93
8.1.150.0040.00418.63
8.1.140.0100.00017.46
8.1.130.0030.00317.87
8.1.120.0000.00717.36
8.1.110.0050.00317.46
8.1.100.0040.00417.41
8.1.90.0030.00517.45
8.1.80.0040.00417.42
8.1.70.0030.00317.34
8.1.60.0030.00617.46
8.1.50.0080.00317.48
8.1.40.0000.00817.55
8.1.30.0040.00417.66
8.1.20.0030.00517.56
8.1.10.0000.00817.58
8.1.00.0000.00817.38
8.0.300.0040.00419.89
8.0.290.0070.00017.28
8.0.280.0040.00418.44
8.0.270.0070.00017.18
8.0.260.0000.00716.88
8.0.250.0070.00017.00
8.0.240.0040.00416.98
8.0.230.0000.00817.05
8.0.220.0000.00716.97
8.0.210.0000.00816.94
8.0.200.0060.00016.91
8.0.190.0000.00817.01
8.0.180.0000.00717.04
8.0.170.0030.00616.99
8.0.160.0000.00816.88
8.0.150.0000.00716.88
8.0.140.0100.00016.82
8.0.130.0000.00613.37
8.0.120.0030.00516.87
8.0.110.0070.00017.02
8.0.100.0040.00416.87
8.0.90.0040.00416.98
8.0.80.0060.01016.95
8.0.70.0080.00016.83
8.0.60.0030.00516.83
8.0.50.0000.00716.84
8.0.30.0120.01017.16
8.0.20.0080.01117.40
8.0.10.0000.00716.97
8.0.00.0110.01116.94
7.4.330.0000.00516.79
7.4.320.0000.00616.48
7.4.300.0000.00716.65
7.4.290.0000.00716.58
7.4.280.0050.00316.48
7.4.270.0000.00616.40
7.4.260.0050.00013.16
7.4.250.0050.00216.59
7.4.240.0000.00716.62
7.4.230.0000.00716.39
7.4.220.0100.01016.61
7.4.210.0060.00816.56
7.4.200.0050.00216.45
7.4.190.0040.00416.56
7.4.160.0080.00816.35
7.4.150.0100.00717.40
7.4.140.0090.00717.86
7.4.130.0100.00916.65
7.4.120.0070.01016.49
7.4.110.0170.00016.47
7.4.100.0120.00616.54
7.4.90.0090.00916.62
7.4.80.0090.00919.39
7.4.70.0100.00716.50
7.4.60.0120.00616.61
7.4.50.0030.00516.41
7.4.40.0000.01622.77
7.4.30.0130.00316.53
7.4.00.0070.01015.13
7.3.330.0060.00013.13
7.3.320.0060.00312.98
7.3.310.0070.00016.29
7.3.300.0030.00316.18
7.3.290.0030.01316.39
7.3.280.0090.00616.32
7.3.270.0160.00017.40
7.3.260.0190.00616.48
7.3.250.0130.00516.45
7.3.240.0130.00316.43
7.3.230.0040.01216.51
7.3.210.0030.01316.41
7.3.200.0150.00619.39
7.3.190.0110.00516.38
7.3.180.0130.00316.46
7.3.170.0100.00716.57
7.3.160.0030.01316.55
7.3.120.0030.01014.84
7.2.330.0040.01416.75
7.2.320.0100.00616.63
7.2.310.0110.01116.75
7.2.300.0110.00616.51
7.2.290.0160.00616.66
7.2.00.0030.01419.10
7.1.100.0130.00518.17
7.1.70.0080.00017.09
7.1.60.0060.01919.21
7.1.50.0170.01434.50
7.1.00.0070.03022.31
7.0.200.0030.00916.43
7.0.140.0100.07022.04
7.0.100.0070.04720.00
7.0.90.0100.08319.97
7.0.80.0200.05320.13
7.0.70.0030.07319.86
7.0.60.0100.07019.95
7.0.50.0300.04720.30
7.0.40.0070.08319.95
7.0.30.0100.04720.23
7.0.20.0030.08320.11
7.0.10.0130.08020.18
7.0.00.0130.08020.10
5.6.280.0030.07321.02
5.6.250.0070.04320.59
5.6.240.0100.04020.57
5.6.230.0170.07320.50
5.6.220.0100.04720.49
5.6.210.0070.07720.73
5.6.200.0070.07321.05
5.6.190.0100.08021.04
5.6.180.0000.05721.04
5.6.170.0100.07721.02
5.6.160.0100.05720.96
5.6.150.0130.07321.03
5.6.140.0070.08021.11
5.6.130.0070.06320.95
5.6.120.0070.05721.05
5.6.110.0030.06021.06
5.6.100.0030.08320.93
5.6.90.0130.08321.02
5.6.80.0100.07720.49
5.6.70.0070.08320.39
5.6.60.0100.07720.45
5.6.50.0170.07020.46
5.6.40.0000.06720.38
5.6.30.0100.07720.40
5.6.20.0030.04720.40
5.6.10.0100.04020.30
5.6.00.0070.03720.47
5.5.380.0030.08020.34
5.5.370.0200.06020.41
5.5.360.0030.06320.40
5.5.350.0100.08020.35
5.5.340.0100.07020.64
5.5.330.0170.06720.88
5.5.320.0070.08720.91
5.5.310.0070.08320.88
5.5.300.0100.04720.82
5.5.290.0100.08020.77
5.5.280.0070.08020.88
5.5.270.0070.08020.71
5.5.260.0130.07720.79
5.5.250.0130.06320.67
5.5.240.0100.07720.26
5.5.230.0070.07020.26
5.5.220.0100.06720.25
5.5.210.0200.05720.25
5.5.200.0200.06720.15
5.5.190.0070.04720.23
5.5.180.0130.07320.12
5.5.160.0030.07720.12
5.5.150.0070.07720.14
5.5.140.0070.08020.26
5.5.130.0000.05320.23
5.5.120.0130.07320.25
5.5.110.0100.07320.13
5.5.100.0170.07020.13
5.5.90.0130.06320.00
5.5.80.0100.06020.06
5.5.70.0130.04720.11
5.5.60.0170.06720.05
5.5.50.0100.05020.08
5.5.40.0030.04720.13
5.5.30.0170.06019.95
5.5.20.0100.09320.13
5.5.10.0170.06319.98
5.5.00.0100.05320.12
5.4.450.0070.06019.14
5.4.440.0030.05019.35
5.4.430.0170.05719.44
5.4.420.0100.07019.27
5.4.410.0200.04719.27
5.4.400.0070.07718.90
5.4.390.0030.08318.81
5.4.380.0130.04719.23
5.4.370.0070.06718.79
5.4.360.0070.08019.05
5.4.350.0170.05018.79
5.4.340.0130.03018.79
5.4.320.0130.04018.84
5.4.310.0000.08719.14
5.4.300.0000.07319.09
5.4.290.0130.03719.22
5.4.280.0000.07718.96
5.4.270.0000.05018.96
5.4.260.0070.07718.80
5.4.250.0070.05018.89
5.4.240.0070.03719.08
5.4.230.0100.06718.96
5.4.220.0130.07019.04
5.4.210.0100.06319.22
5.4.200.0070.07019.05
5.4.190.0100.04719.05
5.4.180.0100.05019.04
5.4.170.0130.06018.97
5.4.160.0100.07018.76
5.4.150.0130.06718.92
5.4.140.0030.05316.22
5.4.130.0070.07716.21
5.4.120.0130.07316.33
5.4.110.0100.06716.32
5.4.100.0030.07316.31
5.4.90.0000.08016.22
5.4.80.0100.07316.29
5.4.70.0200.06316.31
5.4.60.0100.07016.21
5.4.50.0030.07716.20
5.4.40.0100.07016.27
5.4.30.0100.05716.27
5.4.20.0030.07316.33
5.4.10.0130.05716.33
5.4.00.0070.03315.76
5.3.290.0100.07714.48
5.3.280.0100.06314.53
5.3.270.0070.04314.56
5.3.260.0030.08014.42
5.3.250.0070.05014.57
5.3.240.0170.07314.60
5.3.230.0130.07014.46
5.3.220.0030.07314.57
5.3.210.0070.08314.43
5.3.200.0070.07714.52
5.3.190.0000.05314.55
5.3.180.0100.07714.52
5.3.170.0030.08014.52
5.3.160.0130.03714.52
5.3.150.0030.06314.51
5.3.140.0130.06714.42
5.3.130.0130.06714.38
5.3.120.0130.05314.49
5.3.110.0030.08014.54
5.3.100.0100.04713.99
5.3.90.0130.04713.99
5.3.80.0000.08013.95
5.3.70.0070.06013.79
5.3.60.0070.04013.98
5.3.50.0030.07313.85
5.3.40.0070.07313.73
5.3.30.0170.06713.68
5.3.20.0070.06713.44
5.3.10.0000.06713.66
5.3.00.0100.07013.64
5.2.170.0070.04011.73
5.2.160.0030.06011.73
5.2.150.0070.06311.73
5.2.140.0030.06311.73
5.2.130.0100.05311.73
5.2.120.0030.05311.73
5.2.110.0070.03711.73
5.2.100.0070.06011.73
5.2.90.0100.04011.73
5.2.80.0070.04711.73
5.2.70.0070.04011.73
5.2.60.0030.05311.73
5.2.50.0000.06311.73
5.2.40.0000.05711.73
5.2.30.0130.04311.73
5.2.20.0070.03011.73
5.2.10.0000.03711.73
5.2.00.0030.05011.73
5.1.60.0000.02711.73
5.1.50.0130.05011.73
5.1.40.0000.04311.73
5.1.30.0000.04711.73
5.1.20.0000.05011.73
5.1.10.0030.03011.73
5.1.00.0070.05311.73
5.0.50.0070.02311.73
5.0.40.0030.04011.73
5.0.30.0070.05311.73
5.0.20.0070.02011.73
5.0.10.0000.02011.73
5.0.00.0030.06011.73
4.4.90.0030.03011.73
4.4.80.0030.03311.73
4.4.70.0070.03011.73
4.4.60.0070.03011.73
4.4.50.0000.02311.73
4.4.40.0030.03011.73
4.4.30.0030.03311.73
4.4.20.0000.02311.73
4.4.10.0070.02311.73
4.4.00.0030.03011.73
4.3.110.0030.02311.73
4.3.100.0000.02311.73
4.3.90.0030.02311.73
4.3.80.0000.03011.73
4.3.70.0000.02311.73
4.3.60.0070.02011.73
4.3.50.0070.02011.73
4.3.40.0000.04011.73
4.3.30.0000.01711.73
4.3.20.0030.01311.73
4.3.10.0000.01711.73
4.3.00.0000.01711.73

preferences:
42.4 ms | 401 KiB | 5 Q