3v4l.org

run code in 300+ PHP versions simultaneously
<?php @list($a, $b, $c) = array('a', 'b'); var_dump(isset($c));var_dump($c);

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)
8.3.40.0090.00618.80
8.3.30.0070.00718.67
8.3.20.0080.00018.51
8.3.10.0000.00918.75
8.3.00.0090.00019.20
8.2.170.0120.00822.96
8.2.160.0030.01319.09
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0080.00019.79
8.2.110.0090.00022.25
8.2.100.0120.00017.84
8.2.90.0040.00417.75
8.2.80.0050.00318.73
8.2.70.0040.00417.61
8.2.60.0040.00417.63
8.2.50.0040.00417.63
8.2.40.0080.00017.63
8.2.30.0000.00917.77
8.2.20.0000.01117.55
8.2.10.0000.00817.79
8.2.00.0030.00717.68
8.1.270.0080.00023.99
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0030.00624.02
8.1.230.0040.01118.91
8.1.220.0040.00417.76
8.1.210.0040.00418.77
8.1.200.0040.00417.35
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0100.00018.74
8.1.160.0000.00918.51
8.1.150.0000.00718.51
8.1.140.0040.00417.41
8.1.130.0070.00017.31
8.1.120.0000.00717.38
8.1.110.0040.00417.39
8.1.100.0070.00017.41
8.1.90.0000.00717.52
8.1.80.0040.00417.42
8.1.70.0030.00317.43
8.1.60.0030.00517.54
8.1.50.0080.00017.43
8.1.40.0000.00717.43
8.1.30.0040.00417.54
8.1.20.0030.01017.58
8.1.10.0050.00317.53
8.1.00.0060.00317.41
8.0.300.0070.00021.66
8.0.290.0040.00416.75
8.0.280.0040.00418.06
8.0.270.0030.00317.12
8.0.260.0000.00616.80
8.0.250.0000.00817.04
8.0.240.0000.00716.92
8.0.230.0080.00016.88
8.0.220.0040.00416.95
8.0.210.0030.00316.99
8.0.200.0070.00317.02
8.0.190.0040.00416.91
8.0.180.0030.00616.88
8.0.170.0000.00917.02
8.0.160.0040.00416.87
8.0.150.0030.00616.82
8.0.140.0070.00016.86
8.0.130.0000.00613.36
8.0.120.0030.00616.88
8.0.110.0000.00816.84
8.0.100.0000.00716.73
8.0.90.0050.00216.73
8.0.80.0100.01017.00
8.0.70.0070.00016.95
8.0.60.0040.00417.00
8.0.50.0030.00616.88
8.0.30.0130.01017.25
8.0.20.0110.01517.03
8.0.10.0040.00417.08
8.0.00.0100.01016.65
7.4.330.0030.00313.01
7.4.320.0030.00316.65
7.4.300.0000.00616.64
7.4.290.0070.00316.40
7.4.280.0030.00516.55
7.4.270.0000.00716.42
7.4.260.0080.00013.29
7.4.250.0030.00616.39
7.4.240.0070.00016.43
7.4.230.0000.00716.57
7.4.220.0120.01216.42
7.4.210.0090.00616.55
7.4.200.0000.00716.62
7.4.190.0000.00816.63
7.4.160.0090.00616.25
7.4.150.0100.00716.73
7.4.140.0120.00817.86
7.4.130.0120.00616.61
7.4.120.0060.01316.38
7.4.110.0070.01516.36
7.4.100.0110.00716.64
7.4.90.0140.00716.54
7.4.80.0110.00619.39
7.4.70.0130.00316.29
7.4.60.0030.01416.59
7.4.50.0090.00016.36
7.4.40.0030.01016.38
7.4.30.0130.00316.52
7.4.00.0060.00614.84
7.3.330.0030.00313.20
7.3.320.0020.00513.17
7.3.310.0070.00016.23
7.3.300.0030.00316.24
7.3.290.0100.00616.25
7.3.280.0120.00916.25
7.3.270.0100.00716.37
7.3.260.0110.00716.45
7.3.240.0100.00716.26
7.3.230.0040.01216.47
7.3.210.0070.01016.58
7.3.200.0090.00816.36
7.3.190.0060.01016.31
7.3.180.0080.00816.43
7.3.170.0060.01016.30
7.3.160.0110.00716.32
7.3.120.0060.00914.61
7.3.10.0060.00616.54
7.3.00.0100.00016.70
7.2.330.0100.00716.27
7.2.320.0090.01216.24
7.2.310.0160.00616.74
7.2.300.0070.01016.32
7.2.290.0110.00716.39
7.2.130.0090.00616.48
7.2.120.0110.00716.84
7.2.110.0070.00716.95
7.2.100.0070.01116.88
7.2.90.0060.00616.75
7.2.80.0060.00916.77
7.2.70.0090.00616.71
7.2.60.0000.01416.79
7.2.50.0070.01016.98
7.2.40.0030.01316.53
7.2.30.0030.01016.95
7.2.20.0110.00416.89
7.2.10.0100.00616.89
7.2.00.0040.00816.84
7.1.250.0060.00615.41
7.1.200.0090.00615.41
7.1.70.0000.01216.80
7.1.60.0110.01419.25
7.1.50.0060.01316.90
7.1.00.0030.04022.48
7.0.200.0030.00716.88
7.0.140.0030.07321.92
7.0.120.0030.07022.04
7.0.60.0070.07719.85
7.0.50.0070.03717.88
7.0.40.0030.04719.98
7.0.30.0200.05320.18
7.0.20.0300.07719.99
7.0.10.0300.04720.33
7.0.00.0030.07320.12
5.6.280.0130.07021.06
5.6.210.0070.07320.67
5.6.200.0000.05318.22
5.6.190.0100.04720.63
5.6.180.4200.03720.57
5.6.170.0330.06320.52
5.6.160.0100.06020.33
5.6.150.0030.08318.20
5.6.140.0070.08018.22
5.6.130.0100.06718.21
5.6.120.0000.04320.96
5.6.110.0100.08021.16
5.6.100.0070.07721.10
5.6.90.0030.04320.98
5.6.80.0100.06020.51
5.6.70.0400.06320.27
5.5.350.0270.07020.47
5.5.340.0070.08017.91
5.5.330.0070.08720.21
5.5.320.0170.07320.28
5.5.310.0370.06020.13
5.5.300.0100.07318.00
5.5.290.0100.07317.88
5.5.280.0100.06020.95
5.5.270.0100.04720.97
5.5.260.0130.07720.79
5.5.250.0170.08020.69
5.5.240.0070.08020.18
5.4.450.0070.07019.14
5.4.440.0070.04019.50
5.4.430.0170.07319.50
5.4.420.0070.07019.13
5.4.410.0030.04719.20
5.4.400.0170.02718.79
5.4.390.0030.04719.12
5.4.380.0070.07719.17
5.4.370.0070.06319.14
5.4.360.0070.07019.19
5.4.350.0030.06019.14
5.4.340.0030.06318.94
5.4.320.0070.07318.91
5.4.310.0130.06719.12
5.4.300.0070.06019.11
5.4.290.0000.05719.15
5.4.280.0030.05319.08
5.4.270.0000.04718.80
5.4.260.0030.05719.00
5.4.250.0070.04718.91
5.4.240.0000.08019.15
5.4.230.0070.05019.17
5.4.220.0000.04318.79
5.4.210.0200.06319.13
5.4.200.0030.08318.90
5.4.190.0030.07718.80
5.4.180.0130.07018.77
5.4.170.0030.05319.07
5.4.160.0070.04319.06
5.4.150.0070.04018.80
5.4.140.0000.08316.36
5.4.130.0070.07016.47
5.4.120.0030.05716.25
5.4.110.0170.05316.61
5.4.100.0100.03316.41
5.4.90.0030.06716.34
5.4.80.0000.07016.35
5.4.70.0070.07316.30
5.4.60.0070.04016.24
5.4.50.0030.06016.23
5.4.40.0100.07016.21
5.4.30.0030.04316.21
5.4.20.0070.05716.12
5.4.10.0070.06316.36
5.4.00.0070.04715.71
5.3.290.0170.07014.61
5.3.280.0070.07714.52
5.3.270.0070.04714.53
5.3.260.0130.07014.52
5.3.250.0070.07714.70
5.3.240.0030.07714.69
5.3.230.0100.04714.48
5.3.220.0000.04714.48
5.3.210.0030.07014.49
5.3.200.0130.03714.45
5.3.190.0130.05714.44
5.3.180.0100.07014.49
5.3.170.0070.05014.53
5.3.160.0070.06714.50
5.3.150.0070.07714.54
5.3.140.0030.05314.50
5.3.130.0130.07014.52
5.3.120.0100.07014.47
5.3.110.0070.08014.43
5.3.100.0070.07013.95
5.3.90.0030.05013.96
5.3.80.0070.06313.84
5.3.70.0130.03713.97
5.3.60.0030.06314.02
5.3.50.0070.07713.91
5.3.40.0000.05013.87
5.3.30.0000.05713.84
5.3.20.0030.07713.50
5.3.10.0070.07013.59
5.3.00.0130.06713.46
5.2.170.0070.06711.12
5.2.160.0030.05011.03
5.2.150.0030.03011.11
5.2.140.0000.04711.13
5.2.130.0130.03710.93
5.2.120.0030.04711.03
5.2.110.0070.05711.26
5.2.100.0030.03711.07
5.2.90.0070.05310.95
5.2.80.0070.06311.08
5.2.70.0100.04711.02
5.2.60.0070.06311.05
5.2.50.0070.05310.90
5.2.40.0070.03010.93
5.2.30.0030.03310.87
5.2.20.0070.05710.86
5.2.10.0130.05710.90
5.2.00.0100.03310.71
5.1.60.0070.0509.99
5.1.50.0030.04310.01
5.1.40.0030.0309.96
5.1.30.0030.06310.21
5.1.20.0070.03010.30
5.1.10.0000.04310.03
5.1.00.0000.0279.97
5.0.50.0070.0438.54
5.0.40.0100.0208.43
5.0.30.0000.0708.28
5.0.20.0170.0308.10
5.0.10.0000.0408.18
5.0.00.0030.0608.13
4.4.90.0070.0307.57
4.4.80.0070.0277.57
4.4.70.0030.0177.57
4.4.60.0030.0377.57
4.4.50.0000.0207.57
4.4.40.0100.0237.57
4.4.30.0030.0137.57
4.4.20.0000.0377.57
4.4.10.0000.0377.57
4.4.00.0000.0437.57
4.3.110.0070.0237.57
4.3.100.0070.0237.57
4.3.90.0000.0307.57
4.3.80.0000.0407.57
4.3.70.0000.0337.57
4.3.60.0000.0307.57
4.3.50.0000.0407.57
4.3.40.0000.0437.57
4.3.30.0070.0177.57
4.3.20.0000.0377.57
4.3.10.0030.0337.57
4.3.00.0000.0407.57

preferences:
53.03 ms | 400 KiB | 5 Q