3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a[1] = 0; var_dump(isset($a[1])); var_dump(empty($a[1]));

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)
8.3.60.0090.00616.38
8.3.50.0140.00716.41
8.3.40.0090.00618.65
8.3.30.0110.00418.68
8.3.20.0100.00720.21
8.3.10.0030.00523.51
8.3.00.0000.00822.14
8.2.180.0090.00618.31
8.2.170.0150.00622.96
8.2.160.0170.00320.23
8.2.150.0070.01124.18
8.2.140.0100.00724.66
8.2.130.0090.00921.02
8.2.120.0090.00926.35
8.2.110.0040.00420.94
8.2.100.0100.00717.64
8.2.90.0030.00519.09
8.2.80.0050.00318.04
8.2.70.0110.00017.25
8.2.60.0040.00417.68
8.2.50.0000.00918.10
8.2.40.0040.00420.61
8.2.30.0040.00421.09
8.2.20.0000.00717.97
8.2.10.0050.00218.15
8.2.00.0000.00718.13
8.1.280.0200.00025.92
8.1.270.0040.00422.10
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0130.00722.61
8.1.230.0070.00422.13
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0000.00817.36
8.1.190.0050.00317.25
8.1.180.0000.00718.10
8.1.170.0000.00718.92
8.1.160.0030.00318.98
8.1.150.0050.00220.61
8.1.140.0060.00619.50
8.1.130.0030.00318.86
8.1.120.0030.00317.43
8.1.110.0020.00517.39
8.1.100.0030.00617.20
8.1.90.0080.00017.36
8.1.80.0000.00717.32
8.1.70.0000.00717.31
8.1.60.0050.00317.43
8.1.50.0000.00817.40
8.1.40.0090.00017.35
8.1.30.0000.00817.40
8.1.20.0000.00817.54
8.1.10.0070.00017.32
8.1.00.0040.00417.36
8.0.300.0000.00818.77
8.0.290.0000.00816.63
8.0.280.0000.00718.23
8.0.270.0070.00017.04
8.0.260.0030.00316.68
8.0.250.0000.00716.84
8.0.240.0040.00416.81
8.0.230.0040.00416.83
8.0.220.0000.00716.82
8.0.210.0000.00716.66
8.0.200.0030.00316.78
8.0.190.0000.00816.85
8.0.180.0000.00716.75
8.0.170.0030.00316.64
8.0.160.0060.00616.80
8.0.150.0000.00716.65
8.0.140.0050.00216.74
8.0.130.0060.00013.19
8.0.120.0040.00416.60
8.0.110.0040.00416.86
8.0.100.0000.00716.58
8.0.90.0050.00216.60
8.0.80.0120.00916.73
8.0.70.0000.00716.79
8.0.60.0000.00716.55
8.0.50.0040.00416.72
8.0.30.0080.00917.01
8.0.20.0110.01217.40
8.0.10.0040.00416.91
8.0.00.0070.01016.71
7.4.330.0060.00015.55
7.4.320.0030.00316.41
7.4.300.0060.00016.53
7.4.290.0030.00316.33
7.4.280.0090.00016.53
7.4.270.0060.00016.45
7.4.260.0000.00716.46
7.4.250.0000.00716.39
7.4.240.0040.00416.43
7.4.230.0040.00416.56
7.4.220.0160.00316.57
7.4.210.0130.00716.55
7.4.200.0040.00416.43
7.4.160.0050.01216.42
7.4.150.0180.00017.40
7.4.140.0120.00817.86
7.4.130.0130.00916.59
7.4.120.0080.01016.47
7.4.110.0080.00816.31
7.4.100.0100.00716.25
7.4.90.0090.00916.33
7.4.80.0140.00319.39
7.4.70.0040.01216.34
7.4.60.0130.01016.40
7.4.50.0060.00916.42
7.4.40.0040.01216.31
7.4.30.0080.01516.44
7.4.00.0070.00914.77
7.3.330.0000.00512.99
7.3.320.0000.00513.16
7.3.310.0030.00316.31
7.3.300.0060.00016.25
7.3.290.0060.00916.25
7.3.280.0070.01116.27
7.3.270.0090.00917.40
7.3.260.0110.00616.48
7.3.250.0100.00816.26
7.3.240.0100.00916.22
7.3.230.0110.00616.29
7.3.210.0070.01016.36
7.3.200.0060.01016.32
7.3.190.0030.01216.39
7.3.180.0030.01316.18
7.3.170.0090.00616.30
7.3.160.0100.01316.52
7.3.120.0060.01314.61
7.3.110.0040.01214.71
7.3.100.0100.00314.72
7.3.90.0030.01014.84
7.3.80.0030.00714.66
7.3.70.0070.00414.71
7.3.60.0040.00414.63
7.3.50.0030.00814.82
7.3.40.0000.00814.46
7.3.30.0030.00614.79
7.3.20.0040.01416.52
7.3.10.0080.00816.46
7.3.00.0070.00716.47
7.2.330.0120.00816.64
7.2.320.0090.00616.55
7.2.310.0030.01316.65
7.2.300.0090.00616.63
7.2.290.0100.01016.68
7.2.250.0070.01114.91
7.2.240.0030.01414.79
7.2.230.0060.00914.56
7.2.220.0060.01014.84
7.2.210.0090.00315.08
7.2.200.0090.00614.98
7.2.190.0040.00415.00
7.2.180.0030.01014.64
7.2.170.0000.01414.90
7.2.80.0090.00916.41
7.2.60.0000.01516.55
7.2.00.0030.01019.04
7.1.330.0060.00915.70
7.1.320.0100.00715.83
7.1.310.0070.00715.63
7.1.300.0100.00315.53
7.1.290.0100.00315.77
7.1.280.0070.00315.96
7.1.270.0040.00815.46
7.1.260.0030.01015.80
7.1.200.0070.00315.95
7.1.100.0000.01118.05
7.1.70.0090.01117.07
7.1.60.0260.02334.85
7.1.50.0270.02034.59
7.1.40.0250.02134.32
7.1.30.0300.01834.36
7.1.20.0290.01634.43
7.1.10.0070.01316.30
7.1.00.0080.00816.73
7.0.200.0100.00916.55
7.0.190.0110.00716.52
7.0.180.0070.01416.24
7.0.170.0890.01016.39
7.0.160.0000.02016.12
7.0.150.0060.01416.20
7.0.140.0100.01016.25
7.0.130.0040.01216.37
7.0.120.0030.01216.60
7.0.110.0080.01116.31
7.0.100.0760.01414.41
7.0.90.0450.01316.23
7.0.80.0080.00816.40
7.0.70.0070.01316.21
7.0.60.0080.00815.95
7.0.50.0080.00816.34
7.0.40.0090.00916.31
7.0.30.0090.00916.49
7.0.20.0040.01616.11
7.0.10.0080.01416.52
7.0.00.0110.01116.40

preferences:
53.85 ms | 401 KiB | 5 Q