3v4l.org

run code in 300+ PHP versions simultaneously
<?php $key = null; var_dump(isset($key)); $key = 0; var_dump(isset($key)); $key = '0'; var_dump(isset($key));

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)
8.3.60.0110.00418.31
8.3.50.0150.00421.02
8.3.40.0190.00318.72
8.3.30.0120.00318.59
8.3.20.0000.00918.35
8.3.10.0040.00420.72
8.3.00.0080.00019.55
8.2.180.0070.00716.75
8.2.170.0090.00922.96
8.2.160.0030.01120.39
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0000.00726.16
8.2.120.0080.00021.00
8.2.110.0040.00720.54
8.2.100.0070.00417.71
8.2.90.0080.00019.16
8.2.80.0030.00517.97
8.2.70.0060.00317.50
8.2.60.0030.00617.93
8.2.50.0080.00518.07
8.2.40.0030.00518.03
8.2.30.0040.00419.42
8.2.20.0050.00317.48
8.2.10.0030.00617.59
8.2.00.0030.00717.67
8.1.280.0120.00325.92
8.1.270.0080.00023.99
8.1.260.0030.00326.35
8.1.250.0040.00428.09
8.1.240.0090.00022.34
8.1.230.0070.00420.98
8.1.220.0040.00418.77
8.1.210.0040.00418.85
8.1.200.0000.01017.23
8.1.190.0040.00417.50
8.1.180.0040.00418.10
8.1.170.0000.00818.51
8.1.160.0040.00418.80
8.1.150.0050.00218.47
8.1.140.0000.00717.42
8.1.130.0050.00317.86
8.1.120.0000.00717.32
8.1.110.0000.00817.39
8.1.100.0000.00817.34
8.1.90.0000.00817.35
8.1.80.0000.00717.41
8.1.70.0070.00017.28
8.1.60.0030.00617.50
8.1.50.0050.00317.40
8.1.40.0030.00517.44
8.1.30.0040.00417.47
8.1.20.0050.00317.57
8.1.10.0080.00017.46
8.1.00.0040.00417.33
8.0.300.0030.00619.94
8.0.290.0030.00516.93
8.0.280.0070.00018.24
8.0.270.0030.00317.25
8.0.260.0000.00716.70
8.0.250.0030.00316.78
8.0.240.0050.00316.87
8.0.230.0070.00016.86
8.0.220.0000.00716.70
8.0.210.0000.00616.71
8.0.200.0000.00616.77
8.0.190.0040.00416.84
8.0.180.0070.00016.80
8.0.170.0000.00816.71
8.0.160.0000.00716.83
8.0.150.0000.00816.73
8.0.140.0040.00716.78
8.0.130.0030.00313.33
8.0.120.0000.00816.67
8.0.110.0040.00416.86
8.0.100.0000.00716.76
8.0.90.0080.00016.64
8.0.80.0060.00916.86
8.0.70.0050.00316.72
8.0.60.0050.00316.70
8.0.50.0000.00716.76
8.0.30.0140.00517.02
8.0.20.0050.01617.40
8.0.10.0040.00416.87
8.0.00.0080.01316.55
7.4.330.0000.00415.03
7.4.320.0030.00316.48
7.4.300.0000.00616.53
7.4.290.0060.00016.52
7.4.280.0030.00316.43
7.4.270.0030.00316.50
7.4.260.0090.00013.21
7.4.250.0000.00716.38
7.4.240.0070.00016.42
7.4.230.0070.00016.32
7.4.220.0150.01216.51
7.4.210.0030.01216.48
7.4.200.0070.00016.34
7.4.190.0030.00316.57
7.4.160.0030.01216.29
7.4.150.0140.00517.40
7.4.140.0130.02217.86
7.4.130.0060.01116.30
7.4.120.0080.00916.43
7.4.110.0140.00716.37
7.4.100.0120.00616.54
7.4.90.0120.00816.48
7.4.80.0110.00619.39
7.4.70.0100.00716.26
7.4.60.0100.01016.45
7.4.50.0040.00416.14
7.4.40.0080.00422.77
7.4.30.0150.00916.39
7.4.00.0090.00814.78
7.3.330.0060.00013.00
7.3.320.0030.00312.97
7.3.310.0000.00716.18
7.3.300.0000.00616.08
7.3.290.0070.01016.08
7.3.280.0120.00516.11
7.3.270.0100.00717.40
7.3.260.0110.00718.24
7.3.250.0050.01216.25
7.3.240.0030.01616.19
7.3.230.0110.00616.39
7.3.210.0060.00916.28
7.3.200.0050.01019.39
7.3.190.0030.01416.48
7.3.180.0130.00316.25
7.3.170.0090.00616.46
7.3.160.0150.00616.17
7.3.120.0090.00514.75
7.3.110.0110.00614.72
7.3.100.0050.01014.84
7.3.90.0060.00614.66
7.3.80.0080.00314.83
7.3.70.0110.00414.54
7.3.60.0090.00614.64
7.3.50.0050.00514.68
7.3.40.0020.00914.45
7.3.30.0110.00314.66
7.3.20.0060.00716.41
7.3.10.0080.00516.45
7.3.00.0070.00616.42
7.2.330.0070.01316.26
7.2.320.0100.00716.42
7.2.310.0060.01316.59
7.2.300.0000.01616.31
7.2.290.0080.00816.61
7.2.250.0110.00814.81
7.2.240.0050.01415.06
7.2.230.0060.00914.76
7.2.220.0030.00814.98
7.2.210.0060.00614.73
7.2.200.0050.01114.72
7.2.190.0080.00714.75
7.2.180.0060.00614.89
7.2.170.0040.00914.94
7.2.60.0000.01516.71
7.2.00.0040.01119.43
7.1.330.0050.00915.59
7.1.320.0000.01115.63
7.1.310.0050.00515.73
7.1.300.0050.00815.65
7.1.290.0090.00315.65
7.1.280.0050.00715.71
7.1.270.0070.00715.48
7.1.260.0040.00415.67
7.1.200.0030.00715.60
7.1.100.0060.00617.88
7.1.70.0000.00716.82
7.1.60.0000.01417.18
7.1.50.0060.00616.85
7.1.40.0000.01316.48
7.1.30.0060.00616.49
7.1.20.0040.00716.88
7.1.10.0030.00716.54
7.1.00.0040.00416.41
7.0.200.0000.00716.80
7.0.190.0030.00516.56
7.0.180.0030.01016.06
7.0.170.0030.00516.27
7.0.160.0000.00816.03
7.0.150.0000.00716.20
7.0.140.0070.00316.33
7.0.130.0080.00416.47
7.0.120.0000.01416.63
7.0.110.0070.00516.23
7.0.100.0120.00016.28
7.0.90.0030.00916.11
7.0.80.0070.00416.44
7.0.70.0000.01116.10
7.0.60.0030.00716.02
7.0.50.0060.00616.36
7.0.40.0000.01214.75
7.0.30.0000.01014.75
7.0.20.0000.01114.75
7.0.10.0000.01214.75
7.0.00.0000.00814.75
5.6.300.0070.03720.92
5.6.290.0100.04220.82
5.6.280.0030.06320.77
5.6.270.0130.06120.86
5.6.260.0070.04620.79
5.6.250.0130.03720.85
5.6.240.0100.03720.99
5.6.230.0130.05120.81
5.6.220.0030.08120.95
5.6.210.0000.04720.93
5.6.200.0090.04420.95
5.6.190.0070.04320.80
5.6.180.0070.04220.96
5.6.170.0070.04520.81
5.6.160.0100.03721.02
5.6.150.0030.04020.81
5.6.140.0030.04820.81
5.6.130.0070.04720.80
5.6.120.0130.03620.76
5.6.110.0000.05720.83
5.6.100.0070.03721.00
5.6.90.0000.04520.93
5.6.80.0100.04420.35
5.6.70.0000.04520.32
5.6.60.0030.05020.09
5.6.50.0000.04020.29
5.6.40.0300.03420.18
5.6.30.0100.03520.13
5.6.20.0030.04220.38
5.6.10.0000.04420.16
5.6.00.0000.04220.26
5.5.380.0130.05017.46
5.5.370.0030.04717.46
5.5.360.0000.04617.45
5.5.350.0070.04317.45
5.5.340.0000.05417.74
5.5.330.0000.04718.04
5.5.320.0000.04117.87
5.5.310.0100.04018.01
5.5.300.0030.04617.93
5.5.290.0070.03718.02
5.5.280.0030.04118.02
5.5.270.0030.04118.01
5.5.260.0030.04117.94
5.5.250.0030.04317.75
5.5.240.0030.05117.42
5.5.230.0000.04317.27
5.5.220.0000.04317.31
5.5.210.0060.03517.46
5.5.200.0030.04317.40
5.5.190.0030.03917.31
5.5.180.0000.04017.40
5.5.160.0000.04317.29
5.5.150.0100.06017.21
5.5.140.0000.04517.34
5.5.130.0060.03517.05
5.5.120.0030.03917.30
5.5.110.0060.03917.30
5.5.100.0070.03616.96
5.5.90.0060.03817.34
5.5.80.0000.04017.27
5.5.70.0060.03517.25
5.5.60.0070.03417.24
5.5.50.0070.03617.20
5.5.40.0000.04217.18
5.5.30.0000.04117.19
5.5.20.0030.03917.20
5.5.10.0000.04417.28
5.5.00.0000.04417.06
5.4.450.0130.04619.17
5.4.440.0070.03719.21
5.4.430.0030.04319.23
5.4.420.0030.03819.39
5.4.410.0030.03619.32
5.4.400.0030.03519.10
5.4.390.0000.04118.82
5.4.380.0030.04019.08
5.4.370.0100.03219.08
5.4.360.0060.03918.95
5.4.350.0000.04119.07
5.4.340.0030.04018.88
5.4.320.0000.05119.13
5.4.310.0100.03619.07
5.4.300.0090.04418.84
5.4.290.0100.03019.18
5.4.280.0040.03918.88
5.4.270.0030.04119.02
5.4.260.0000.04319.07
5.4.250.0110.03219.01
5.4.240.0070.03919.05
5.4.230.0000.03919.07
5.4.220.0070.04618.81
5.4.210.0060.04118.98
5.4.200.0040.03518.87
5.4.190.0100.03319.06
5.4.180.0070.03719.13
5.4.170.0070.06419.04
5.4.160.0000.04119.03
5.4.150.0090.04119.06
5.4.140.0100.03216.39
5.4.130.0000.03816.62
5.4.120.0000.05316.56
5.4.110.0060.03716.62
5.4.100.0030.03916.50
5.4.90.0000.04316.42
5.4.80.0030.03816.60
5.4.70.0060.03616.63
5.4.60.0030.04816.45
5.4.50.0000.03716.54
5.4.40.0030.03916.68
5.4.30.0030.03516.39
5.4.20.0030.04116.61
5.4.10.0030.03716.55
5.4.00.0070.03015.92
5.3.290.0100.03914.75
5.3.280.0030.04114.75
5.3.270.0030.06214.75
5.3.260.0000.04214.75
5.3.250.0070.03614.75
5.3.240.0000.03914.75
5.3.230.0030.03614.75
5.3.220.0030.04114.75
5.3.210.0000.04414.75
5.3.200.0000.03914.75
5.3.190.0030.03414.75
5.3.180.0100.03514.75
5.3.170.0030.03914.75
5.3.160.0070.03614.75
5.3.150.0060.03514.78
5.3.140.0030.03514.75
5.3.130.0000.04314.75
5.3.120.0000.04414.75
5.3.110.0060.03814.75
5.3.100.0000.04214.75
5.3.90.0030.04614.75
5.3.80.0060.03114.75
5.3.70.0030.04014.75
5.3.60.0030.03714.75
5.3.50.0030.03314.75
5.3.40.0000.04014.75
5.3.30.0070.03414.75
5.3.20.0060.03214.75
5.3.10.0070.02914.75
5.3.00.0030.03314.75
5.2.170.0000.03314.75
5.2.160.0000.03014.75
5.2.150.0030.03014.75
5.2.140.0000.03514.75
5.2.130.0030.02714.75
5.2.120.0030.02914.75
5.2.110.0040.02614.75
5.2.100.0070.02314.75
5.2.90.0000.03014.75
5.2.80.0060.02614.75
5.2.70.0000.03614.75
5.2.60.0000.03714.75
5.2.50.0030.03914.75
5.2.40.0000.03114.75
5.2.30.0060.02514.75
5.2.20.0030.02714.75
5.2.10.0100.02314.75
5.2.00.0030.02814.75
5.1.60.0090.01914.75
5.1.50.0000.03014.75
5.1.40.0030.02314.75
5.1.30.0070.02314.75
5.1.20.0030.03014.75
5.1.10.0000.03114.75
5.1.00.0000.03514.75
5.0.50.0000.02814.75
5.0.40.0030.02014.75
5.0.30.0030.03014.75
5.0.20.0000.02214.75
5.0.10.0000.02314.75
5.0.00.0060.02514.75
4.4.90.0000.01714.75
4.4.80.0000.01614.75
4.4.70.0070.02414.75
4.4.60.0000.01614.75
4.4.50.0030.01314.75
4.4.40.0030.02314.75
4.4.30.0030.01314.75
4.4.20.0000.01814.75
4.4.10.0000.01814.75
4.4.00.0000.02514.75
4.3.110.0030.01514.75
4.3.100.0000.01714.75
4.3.90.0000.01614.75
4.3.80.0000.03814.75
4.3.70.0040.02214.75
4.3.60.0030.01514.75
4.3.50.0000.01914.75
4.3.40.0030.04614.75
4.3.30.0030.01414.75
4.3.20.0000.01714.75
4.3.10.0040.01414.75
4.3.00.0030.01714.75

preferences:
58.6 ms | 401 KiB | 5 Q