3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a($a, $b = null) { var_dump($a); var_dump(isset($a)); var_dump(is_null($a)); var_dump($b); var_dump(isset($b)); var_dump(is_null($b)); } a(); print "\n\n---\n\n"; a(1); print "\n\n---\n\n"; a(1,2); print "\n\n---\n\n"; a(null); print "\n\n---\n\n"; a(null, null); print "\n\n---\n\n";

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)
8.3.60.0140.00716.63
8.3.50.0140.00722.05
8.3.40.0140.00318.74
8.3.30.0110.00718.65
8.3.20.0060.00320.19
8.3.10.0040.00423.62
8.3.00.0090.00019.13
8.2.180.0090.00618.41
8.2.170.0070.01022.96
8.2.160.0030.01020.39
8.2.150.0140.00424.18
8.2.140.0030.00624.66
8.2.130.0090.00017.50
8.2.120.0080.00026.35
8.2.110.0040.00720.53
8.2.100.0090.00317.84
8.2.90.0000.00819.05
8.2.80.0040.00417.97
8.2.70.0060.00317.47
8.2.60.0040.00417.68
8.2.50.0000.00918.07
8.2.40.0060.00319.45
8.2.30.0040.00420.63
8.2.20.0020.00517.75
8.2.10.0000.00718.07
8.2.00.0000.00718.06
8.1.280.0170.00325.92
8.1.270.0050.00322.07
8.1.260.0080.00028.09
8.1.250.0040.00428.09
8.1.240.0070.00323.78
8.1.230.0060.00622.76
8.1.220.0060.00317.74
8.1.210.0060.00318.77
8.1.200.0050.00517.35
8.1.190.0060.00317.22
8.1.180.0040.00418.10
8.1.170.0060.00318.66
8.1.160.0040.00421.84
8.1.150.0050.00318.77
8.1.140.0090.00019.41
8.1.130.0040.00417.50
8.1.120.0040.00417.35
8.1.110.0000.00717.34
8.1.100.0030.00517.38
8.1.90.0000.00817.24
8.1.80.0000.00717.36
8.1.70.0030.00317.33
8.1.60.0030.00617.56
8.1.50.0030.00517.30
8.1.40.0080.00017.41
8.1.30.0040.00417.49
8.1.20.0000.00817.50
8.1.10.0060.00317.40
8.1.00.0040.00417.48
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0000.00818.39
8.0.270.0000.00717.07
8.0.260.0030.00317.23
8.0.250.0040.00417.00
8.0.240.0000.00617.03
8.0.230.0050.00216.92
8.0.220.0040.00416.73
8.0.210.0050.00316.92
8.0.200.0040.00416.95
8.0.190.0050.00316.91
8.0.180.0040.00416.81
8.0.170.0000.00816.94
8.0.160.0040.00416.88
8.0.150.0050.00316.88
8.0.140.0040.00416.82
8.0.130.0000.00513.26
8.0.120.0040.00416.91
8.0.110.0040.00416.88
8.0.100.0030.00316.71
8.0.90.0080.00016.80
8.0.80.0060.01316.96
8.0.70.0050.00316.87
8.0.60.0020.00516.96
8.0.50.0040.00416.70
8.0.30.0110.01017.14
8.0.20.0060.01217.40
8.0.10.0040.00416.76
8.0.00.0130.00816.79
7.4.330.0060.00015.08
7.4.320.0000.00616.39
7.4.300.0000.00616.44
7.4.290.0030.00316.49
7.4.280.0030.00616.46
7.4.270.0070.00016.45
7.4.260.0070.00016.54
7.4.250.0040.00416.43
7.4.240.0030.00416.47
7.4.230.0070.00016.36
7.4.220.0030.01416.48
7.4.210.0110.00816.50
7.4.200.0020.00516.55
7.4.160.0140.00316.48
7.4.150.0050.01417.40
7.4.140.0110.00917.86
7.4.130.0160.01016.46
7.4.120.0140.00316.65
7.4.110.0170.01016.51
7.4.100.0040.01416.42
7.4.90.0150.00316.34
7.4.80.0090.01219.39
7.4.70.0070.01016.46
7.4.60.0060.01616.63
7.4.50.0040.00416.37
7.4.40.0150.01016.52
7.4.30.0090.01316.57
7.4.00.0050.00914.93
7.3.330.0060.00013.28
7.3.320.0000.00513.30
7.3.310.0040.00416.33
7.3.300.0030.00316.29
7.3.290.0090.00616.28
7.3.280.0100.00716.25
7.3.270.0140.00317.40
7.3.260.0070.01016.69
7.3.240.0070.01116.33
7.3.230.0060.01016.39
7.3.210.0150.00316.57
7.3.200.0120.00916.62
7.3.190.0060.01616.60
7.3.180.0080.00816.46
7.3.170.0120.00316.27
7.3.160.0040.01216.29
7.3.120.0090.00914.54
7.3.110.0000.01614.78
7.3.100.0100.00614.85
7.3.90.0040.00814.67
7.3.80.0060.00614.73
7.3.70.0070.00714.76
7.3.60.0070.00714.48
7.3.50.0100.00714.89
7.3.40.0090.00014.38
7.3.30.0060.00614.75
7.3.20.0090.00016.40
7.3.10.0060.00916.56
7.3.00.0070.00716.36
7.2.330.0120.00616.37
7.2.320.0120.00916.58
7.2.310.0070.01016.50
7.2.300.0040.01416.37
7.2.290.0110.00616.70
7.2.250.0100.00714.78
7.2.240.0090.00914.84
7.2.230.0080.00814.70
7.2.220.0000.00915.02
7.2.210.0080.00314.38
7.2.200.0070.00714.89
7.2.190.0100.00714.82
7.2.180.0000.01714.93
7.2.170.0130.00014.99
7.2.60.0080.00416.87
7.2.00.0080.00819.05
7.1.330.0080.00815.61
7.1.320.0080.00415.48
7.1.310.0080.00315.25
7.1.300.0030.01015.61
7.1.290.0030.01015.54
7.1.280.0060.00615.73
7.1.270.0060.00915.65
7.1.260.0090.00015.61
7.1.200.0040.00815.59
7.1.100.0040.01118.10
7.1.70.0070.00717.01
7.1.60.0000.02319.48
7.1.50.0070.01416.77
7.1.00.0070.07322.28
7.0.200.0220.00714.78
7.0.60.0000.05019.80
7.0.50.0030.06317.73
7.0.40.0100.04020.22
7.0.30.0100.05020.17
7.0.20.0270.07720.30
7.0.10.0070.09020.06
7.0.00.0100.09020.32
5.6.280.0030.06321.10
5.6.210.0170.05720.69
5.6.200.0070.08018.18
5.6.190.0030.08720.47
5.6.180.0330.07020.67
5.6.170.0230.08020.52
5.6.160.0170.07020.54
5.6.150.0030.08318.18
5.6.140.0070.04318.27
5.6.130.0100.07018.18
5.6.120.0200.07321.02
5.6.110.0070.05021.02
5.6.100.0070.06721.00
5.6.90.0030.08021.03
5.6.80.0100.07320.43
5.5.350.3100.02720.38
5.5.340.0100.04018.02
5.5.330.0070.04320.41
5.5.320.0230.07320.42
5.5.310.0330.07720.27
5.5.300.0030.07018.07
5.5.290.0070.08018.09
5.5.280.0000.09020.90
5.5.270.0070.07320.86
5.5.260.0130.07020.68
5.5.250.0070.08020.55
5.5.240.0230.07020.13

preferences:
72.55 ms | 401 KiB | 5 Q