3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(isset($a)); $a = null; var_dump(isset($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)
8.4.10.0080.00017.71
8.3.140.0120.00616.71
8.3.130.0050.00516.73
8.3.120.0030.00620.62
8.3.110.0030.00616.48
8.3.100.0030.00616.49
8.3.90.0060.00326.77
8.3.80.0070.00719.36
8.3.70.0100.01016.63
8.3.60.0060.01016.38
8.3.50.0120.00216.49
8.3.40.0070.00718.75
8.3.30.0120.00318.47
8.3.20.0040.00421.91
8.3.10.0050.00221.78
8.3.00.0080.00022.39
8.2.260.0090.00916.61
8.2.250.0000.00717.26
8.2.240.0040.01416.96
8.2.230.0080.00022.58
8.2.220.0140.00424.06
8.2.210.0030.01526.77
8.2.200.0050.00518.88
8.2.190.0090.00618.16
8.2.180.0120.00918.41
8.2.170.0070.01422.96
8.2.160.0120.00622.17
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00426.16
8.2.110.0000.01120.97
8.2.100.0040.00717.72
8.2.90.0000.00820.48
8.2.80.0030.00517.97
8.2.70.0000.00817.90
8.2.60.0070.00017.97
8.2.50.0060.00318.10
8.2.40.0000.00719.35
8.2.30.0040.00419.07
8.2.20.0000.00717.92
8.2.10.0000.00719.06
8.2.00.0020.00519.16
8.1.300.0120.00617.69
8.1.290.0060.00330.84
8.1.280.0140.00325.92
8.1.270.0070.00022.24
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0070.00422.50
8.1.230.0070.00420.89
8.1.220.0080.00017.74
8.1.210.0040.00419.21
8.1.200.0000.00817.23
8.1.190.0030.00617.13
8.1.180.0030.00518.10
8.1.170.0090.00018.53
8.1.160.0000.00818.67
8.1.150.0060.00318.83
8.1.140.0000.00720.89
8.1.130.0000.00717.44
8.1.120.0030.00317.38
8.1.110.0030.00617.37
8.1.100.0000.00917.43
8.1.90.0040.00417.37
8.1.80.0060.00317.37
8.1.70.0000.00717.37
8.1.60.0000.00817.57
8.1.50.0040.00417.52
8.1.40.0090.00017.43
8.1.30.0110.00017.50
8.1.20.0030.00517.47
8.1.10.0030.00617.42
8.1.00.0040.00417.40
8.0.300.0000.00719.90
8.0.290.0030.00616.75
8.0.280.0000.00818.30
8.0.270.0030.00317.07
8.0.260.0000.00716.66
8.0.250.0000.00616.81
8.0.240.0070.00016.82
8.0.230.0000.00816.78
8.0.220.0000.00716.73
8.0.210.0030.00516.79
8.0.200.0080.00016.89
8.0.190.0070.00016.88
8.0.180.0040.00416.84
8.0.170.0040.00416.72
8.0.160.0000.00716.79
8.0.150.0070.00016.80
8.0.140.0040.00416.78
8.0.130.0030.00313.27
8.0.120.0050.00316.69
8.0.110.0040.00416.70
8.0.100.0040.00416.85
8.0.90.0000.00816.76
8.0.80.0150.00616.85
8.0.70.0080.00016.72
8.0.60.0000.00716.79
8.0.50.0020.00516.62
8.0.30.0060.01016.89
8.0.20.0120.00616.88
8.0.10.0040.00416.81
8.0.00.0100.01316.89
7.4.330.0000.00615.55
7.4.320.0030.00316.54
7.4.300.0000.00616.55
7.4.290.0070.00016.44
7.4.280.0000.00816.43
7.4.270.0070.00016.59
7.4.260.0000.00513.23
7.4.250.0080.00016.38
7.4.240.0020.00616.46
7.4.230.0000.00716.52
7.4.220.0040.00316.36
7.4.210.0080.00916.52
7.4.200.0000.00616.52
7.4.140.0070.01017.86
7.4.130.0070.01116.27
7.4.120.0100.00716.44
7.4.110.0070.01516.28
7.4.100.0100.00716.27
7.4.90.0060.01216.60
7.4.80.0030.01419.39
7.4.70.0060.01016.47
7.4.60.0200.00316.33
7.4.50.0030.01316.18
7.4.40.0060.01316.24
7.4.00.0020.01414.84
7.3.330.0000.00716.09
7.3.320.0050.00013.07
7.3.310.0000.00716.18
7.3.300.0030.00316.18
7.3.290.0030.00315.99
7.3.280.0110.00716.11
7.3.260.0140.00616.20
7.3.240.0160.00416.29
7.3.230.0110.00716.14
7.3.210.0030.01416.29
7.3.200.0100.00616.37
7.3.190.0150.00616.33
7.3.180.0060.01516.27
7.3.170.0030.01516.08
7.3.160.0140.00316.29
7.3.120.0070.01014.77
7.3.110.0000.01114.87
7.3.100.0110.00714.68
7.3.90.0110.00514.76
7.3.80.0030.01414.63
7.3.70.0080.00814.54
7.3.60.0080.00914.64
7.3.50.0060.00814.58
7.3.40.0050.01014.59
7.3.30.0090.00614.56
7.3.20.0100.00415.62
7.3.10.0080.00515.57
7.3.00.0100.00616.52
7.2.330.0170.00416.52
7.2.320.0080.00816.58
7.2.310.0120.00616.52
7.2.300.0090.01216.34
7.2.290.0070.01016.29
7.2.250.0060.01215.02
7.2.240.0000.01814.79
7.2.230.0030.01014.83
7.2.220.0050.01014.77
7.2.210.0080.01114.85
7.2.200.0050.01114.72
7.2.190.0070.00714.87
7.2.180.0100.00714.94
7.2.170.0070.00914.95
7.2.160.0060.00714.78
7.2.150.0060.00915.90
7.2.140.0060.01015.83
7.2.130.0340.01016.78
7.2.120.0050.01016.88
7.2.110.0100.00516.82
7.2.100.0100.00516.74
7.2.90.0050.01016.84
7.2.80.0100.00716.86
7.2.70.0100.00816.70
7.2.60.0070.01216.78
7.2.50.0110.00516.77
7.2.40.0120.00316.64
7.2.30.0090.00816.63
7.2.20.0110.00716.72
7.2.10.0060.01215.83
7.2.00.0870.01316.73
7.1.330.0030.01215.66
7.1.320.0080.01015.60
7.1.310.0080.00914.83
7.1.300.0070.00915.73
7.1.290.0050.01115.67
7.1.280.0090.00714.77
7.1.270.0060.00814.69
7.1.260.0230.00714.74
7.1.250.0050.00915.68
7.1.240.0090.00615.58
7.1.230.0060.00915.67
7.1.220.0100.00315.75
7.1.210.0090.00615.40
7.1.200.0060.00915.73
7.1.190.0030.01015.43
7.1.180.0040.01115.64
7.1.170.0100.00315.59
7.1.160.0090.00615.48
7.1.150.0000.01315.53
7.1.140.0040.01115.69
7.1.130.0080.00615.34
7.1.120.0030.01015.42
7.1.110.0040.00815.73
7.1.100.0040.01215.85
7.1.90.0070.00715.82
7.1.80.0070.00715.50
7.1.70.0060.00615.77
7.1.60.0100.00315.83
7.1.50.0070.01015.75
7.1.40.0070.00715.52
7.1.30.0060.00815.73
7.1.20.0080.00815.68
7.1.10.0060.00615.41
7.1.00.0000.01215.61

preferences:
59.92 ms | 403 KiB | 5 Q