3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; $a['a'] = null; $a['b'] = false; var_dump(isset($a['a'])); var_dump(isset($a['b']));

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)
8.3.60.0140.00718.43
8.3.50.0040.01116.58
8.3.40.0000.01418.71
8.3.30.0140.00018.54
8.3.20.0000.00720.04
8.3.10.0070.00723.56
8.3.00.0070.00019.68
8.2.180.0070.01116.50
8.2.170.0120.00622.96
8.2.160.0040.01118.89
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00419.24
8.2.120.0080.00026.35
8.2.110.0090.00019.34
8.2.100.0110.00017.78
8.2.90.0000.00819.00
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0060.00317.93
8.2.50.0050.00318.10
8.2.40.0030.00620.59
8.2.30.0070.00019.24
8.2.20.0030.00518.07
8.2.10.0040.00418.12
8.2.00.0000.00817.95
8.1.280.0100.00325.92
8.1.270.0040.00422.06
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0040.00422.05
8.1.230.0110.00017.83
8.1.220.0080.00017.76
8.1.210.0060.00318.77
8.1.200.0030.00617.35
8.1.190.0050.00317.23
8.1.180.0080.00018.10
8.1.170.0040.00418.52
8.1.160.0000.00719.00
8.1.150.0040.00420.48
8.1.140.0030.00619.56
8.1.130.0050.00318.69
8.1.120.0000.00717.28
8.1.110.0050.00317.40
8.1.100.0070.00017.23
8.1.90.0000.00717.44
8.1.80.0030.00317.34
8.1.70.0030.00317.46
8.1.60.0030.00517.51
8.1.50.0080.00017.37
8.1.40.0040.00417.37
8.1.30.0070.00017.47
8.1.20.0040.00417.55
8.1.10.0090.00017.42
8.1.00.0000.00717.42
8.0.300.0040.00418.77
8.0.290.0050.00316.58
8.0.280.0000.00818.38
8.0.270.0080.00017.23
8.0.260.0000.00616.70
8.0.250.0070.00016.88
8.0.240.0030.00316.77
8.0.230.0070.00016.90
8.0.220.0060.00016.69
8.0.210.0040.00416.84
8.0.200.0000.00716.95
8.0.190.0030.00616.84
8.0.180.0030.00516.88
8.0.170.0030.00316.82
8.0.160.0030.00316.80
8.0.150.0040.00416.73
8.0.140.0030.00316.67
8.0.130.0000.00613.18
8.0.120.0030.00616.74
8.0.110.0000.00716.86
8.0.100.0000.00716.69
8.0.90.0050.00316.69
8.0.80.0060.01416.83
8.0.70.0070.00016.87
8.0.60.0040.00416.70
8.0.50.0040.00416.62
8.0.30.0110.00817.06
8.0.20.0070.01317.40
8.0.10.0040.00416.89
8.0.00.0090.00916.77
7.4.330.0030.00315.55
7.4.320.0030.00316.58
7.4.300.0000.00716.44
7.4.290.0050.00316.41
7.4.280.0070.00016.44
7.4.270.0030.00316.38
7.4.260.0000.00716.51
7.4.250.0000.00716.49
7.4.240.0040.00416.37
7.4.230.0070.00016.51
7.4.220.0090.00916.51
7.4.210.0000.01516.38
7.4.200.0000.00716.57
7.4.160.0110.00616.40
7.4.150.0160.01017.40
7.4.140.0090.00817.86
7.4.130.0160.00616.34
7.4.120.0110.00816.41
7.4.110.0130.00316.38
7.4.100.0160.00316.39
7.4.90.0180.00616.37
7.4.80.0060.01619.39
7.4.70.0060.00916.48
7.4.60.0070.01416.35
7.4.50.0030.01416.30
7.4.40.0070.01316.33
7.4.30.0030.01416.55
7.4.00.0000.01414.81
7.3.330.0030.00313.18
7.3.320.0000.00513.22
7.3.310.0000.00716.22
7.3.300.0040.00416.11
7.3.290.0100.00516.29
7.3.280.0090.00716.26
7.3.270.0060.01217.40
7.3.260.0100.00716.38
7.3.250.0080.01116.18
7.3.240.0080.00816.41
7.3.230.0160.00716.27
7.3.210.0090.00616.50
7.3.200.0130.00316.50
7.3.190.0080.00816.21
7.3.180.0110.00616.55
7.3.170.0140.00916.20
7.3.160.0100.00716.12
7.2.330.0070.01016.40
7.2.320.0110.00616.39
7.2.310.0080.00816.67
7.2.300.0090.00916.35
7.2.290.0110.00716.68
7.2.60.1030.00814.86
7.2.00.0000.01719.36
7.1.200.0030.00915.70
7.1.100.0040.00718.14
7.1.70.0200.01415.20
7.1.60.0440.01933.25
7.1.50.0450.01432.68
7.1.40.0370.01432.53
7.1.30.1210.01032.76
7.1.20.0360.01532.58
7.1.10.0230.00714.75
7.1.00.0200.01314.65
7.0.200.0190.01114.82
7.0.190.0250.00914.73
7.0.180.0210.01314.39
7.0.170.0200.01114.52
7.0.160.0220.01114.27
7.0.150.0200.01314.30
7.0.140.0430.01214.46
7.0.130.0110.02214.51
7.0.120.0230.01314.57
7.0.110.0250.00714.31
7.0.100.0240.01014.29
7.0.90.0250.01314.34
7.0.80.0250.01014.67
7.0.70.0240.01314.14
7.0.60.0200.01014.36
7.0.50.0180.01114.51
7.0.40.0160.01014.55
7.0.30.0190.00914.48
7.0.20.0220.01214.24
7.0.10.0220.01114.70
7.0.00.0130.01114.42

preferences:
37.61 ms | 401 KiB | 5 Q