3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = ''; $test = null; var_dump(isset($test)); echo $test; $test2 = ''; unset($test2); var_dump(isset($test2)); echo $test2;

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)
8.3.60.0070.01418.68
8.3.50.0100.01016.08
8.3.40.0180.00618.71
8.3.30.0000.01418.69
8.3.20.0030.00519.82
8.3.10.0040.00420.66
8.3.00.0040.00423.60
8.2.180.0140.00718.13
8.2.170.0070.00722.96
8.2.160.0130.00620.10
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0060.00321.08
8.2.110.0030.00622.16
8.2.100.0110.00017.72
8.2.90.0040.00417.75
8.2.80.0040.00418.77
8.2.70.0040.00417.63
8.2.60.0000.00817.75
8.2.50.0000.00917.63
8.2.40.0030.00519.35
8.2.30.0030.00620.41
8.2.20.0070.00017.92
8.2.10.0040.00418.06
8.2.00.0000.00718.11
8.1.280.0110.00725.92
8.1.270.0040.00420.66
8.1.260.0070.00326.35
8.1.250.0140.00028.09
8.1.240.0030.00720.20
8.1.230.0070.00717.60
8.1.220.0030.00517.74
8.1.210.0070.00218.77
8.1.200.0080.00017.23
8.1.190.0040.00417.10
8.1.180.0040.00418.10
8.1.170.0000.00817.76
8.1.160.0000.00718.74
8.1.150.0070.00020.15
8.1.140.0050.00219.41
8.1.130.0000.00718.90
8.1.120.0000.00717.41
8.1.110.0080.00017.27
8.1.100.0000.00917.36
8.1.90.0040.00417.38
8.1.80.0000.00717.41
8.1.70.0030.00317.27
8.1.60.0000.00817.51
8.1.50.0000.00917.32
8.1.40.0070.00017.43
8.1.30.0040.00417.53
8.1.20.0040.00417.42
8.1.10.0000.00817.37
8.1.00.0040.00417.40
8.0.300.0040.00418.77
8.0.290.0070.00016.88
8.0.280.0070.00018.43
8.0.270.0040.00417.29
8.0.260.0000.00717.30
8.0.250.0060.00017.06
8.0.240.0040.00417.04
8.0.230.0040.00416.82
8.0.220.0020.00516.87
8.0.210.0030.00316.88
8.0.200.0030.00616.86
8.0.190.0050.00216.86
8.0.180.0000.00716.91
8.0.170.0030.00316.77
8.0.160.0080.00016.79
8.0.150.0040.00416.85
8.0.140.0050.00316.86
8.0.130.0020.00613.36
8.0.120.0040.00416.86
8.0.110.0030.00316.94
8.0.100.0040.00416.69
8.0.90.0000.00816.82
8.0.80.0160.00016.92
8.0.70.0000.00816.89
8.0.60.0020.00516.76
8.0.50.0030.00516.67
8.0.30.0060.01116.95
8.0.20.0130.00617.40
8.0.10.0000.00816.88
8.0.00.0120.00616.71
7.4.330.0050.00015.55
7.4.320.0030.00316.50
7.4.300.0000.00616.42
7.4.290.0030.00316.41
7.4.280.0070.00016.54
7.4.270.0000.00716.37
7.4.260.0070.00016.48
7.4.250.0030.00316.50
7.4.240.0070.00016.45
7.4.230.0000.00716.55
7.4.220.0070.01416.50
7.4.210.0090.00616.45
7.4.200.0070.00016.31
7.4.160.0120.00516.39
7.4.150.0060.01117.40
7.4.140.0140.00417.86
7.4.130.0130.00616.46
7.4.120.0090.00916.44
7.4.110.0070.01016.45
7.4.100.0130.01016.27
7.4.90.0030.01316.39
7.4.80.0090.00919.39
7.4.70.0080.00816.61
7.4.60.0060.01016.27
7.4.50.0060.00916.46
7.4.40.0060.01116.45
7.4.30.0060.01016.59
7.4.00.0100.00314.86
7.3.330.0000.00613.21
7.3.320.0000.00513.23
7.3.310.0030.00316.28
7.3.300.0030.00316.16
7.3.290.0000.00616.16
7.3.280.0080.01016.25
7.3.270.0100.00717.40
7.3.260.0070.01016.38
7.3.250.0110.00916.37
7.3.240.0130.00516.34
7.3.230.0130.01016.30
7.3.210.0030.01516.29
7.3.200.0110.00616.44
7.3.190.0040.01216.46
7.3.180.0000.01716.45
7.3.170.0120.00416.34
7.3.160.0040.01316.27
7.3.120.0060.01214.66
7.3.110.0130.00714.72
7.3.100.0100.00714.89
7.3.90.0130.00014.63
7.3.80.0000.01314.95
7.3.70.0000.01214.45
7.3.60.0110.00014.66
7.3.50.0000.01414.70
7.3.40.0100.00314.61
7.3.30.0040.01114.29
7.3.20.0060.00616.53
7.3.10.0030.01216.39
7.3.00.0100.00316.13
7.2.330.0060.01416.67
7.2.320.0100.00716.17
7.2.310.0080.00816.54
7.2.300.0040.01416.57
7.2.290.0110.00616.33
7.2.250.0100.01014.64
7.2.240.0070.01014.59
7.2.230.0000.01414.73
7.2.220.0060.00614.71
7.2.210.0040.01114.87
7.2.200.0040.00814.82
7.2.190.0110.00314.52
7.2.180.0030.01314.57
7.2.170.0000.01314.69
7.2.160.0030.01014.69
7.2.150.0060.00616.55
7.2.140.0060.00916.34
7.2.130.0080.00816.48
7.2.120.0060.00616.52
7.2.110.0120.00316.34
7.2.100.0100.00316.43
7.2.90.0090.00616.38
7.2.80.0070.00716.49
7.2.70.0040.00816.46
7.2.60.0070.00716.72
7.2.50.0040.01516.85
7.2.40.0030.01416.74
7.2.30.0000.01516.56
7.2.20.0040.00716.82
7.2.10.0120.00616.58
7.2.00.0090.00616.72
7.1.330.0030.01015.35
7.1.320.0070.00715.75
7.1.310.0070.00415.41
7.1.300.0090.00615.49
7.1.290.0090.00615.71
7.1.280.0050.00815.21
7.1.270.0140.00315.16
7.1.260.0040.00715.14
7.1.250.0130.00015.67
7.1.240.0070.00715.58
7.1.230.0050.00515.47
7.1.220.0090.00615.73
7.1.210.0040.01115.44
7.1.200.0090.00315.57
7.1.190.0070.00415.55
7.1.180.0030.01115.46
7.1.170.0030.00615.50
7.1.160.0070.00715.65
7.1.150.0040.01115.29
7.1.140.0060.01015.46
7.1.130.0030.00815.67
7.1.120.0110.00415.52
7.1.110.0040.00715.67
7.1.100.0080.00415.66
7.1.90.0040.00815.59
7.1.80.0130.00315.63
7.1.70.0030.00716.33
7.1.60.0090.00216.25
7.1.50.0030.00815.63
7.1.40.0000.01715.55
7.1.30.0070.01015.31
7.1.20.0100.04427.97
7.1.10.0110.04518.99
7.1.00.0030.03919.10
7.0.330.0100.00314.88
7.0.320.0030.01015.00
7.0.310.0040.01115.03
7.0.300.0000.01115.15
7.0.290.0030.01015.03
7.0.280.0030.00915.12
7.0.270.0060.00615.01
7.0.260.0060.00614.84
7.0.250.0000.01415.10
7.0.240.0040.00415.30
7.0.230.0070.01014.96
7.0.220.0000.00815.25
7.0.210.0080.00414.97
7.0.200.0020.01315.91
7.0.190.0070.00715.26
7.0.180.0000.01515.17
7.0.170.0030.00715.24
7.0.160.0130.03718.54
7.0.150.0020.03518.54
7.0.140.0050.03218.53
7.0.130.0080.03118.66
7.0.120.0080.02818.49
7.0.110.0090.02918.60
7.0.100.0060.03518.42
7.0.90.0080.03318.39
7.0.80.0030.03318.47
7.0.70.0070.03218.45
7.0.60.0110.02518.49
7.0.50.0050.03418.76
7.0.40.0060.03117.67
7.0.30.0080.03117.41
7.0.20.0000.03917.61
7.0.10.0070.03017.63
7.0.00.0070.02917.61
5.6.400.0030.01014.33
5.6.390.0100.00714.18
5.6.380.0070.00813.87
5.6.370.0030.01014.08
5.6.360.0060.00314.11
5.6.350.0030.01014.00
5.6.340.0060.00613.81
5.6.330.0030.01014.05
5.6.320.0030.00914.11
5.6.310.0030.00514.05
5.6.300.0070.00714.01
5.6.290.0040.01114.36
5.6.280.0060.00914.25
5.6.270.0030.00713.94
5.6.260.0030.00614.21
5.6.250.0070.00714.06
5.6.240.0000.01714.21
5.6.230.0050.00313.97
5.6.220.0100.00314.05
5.6.210.0090.00614.25
5.6.200.0040.00714.34
5.6.190.0030.00913.99
5.6.180.0050.00913.84
5.6.170.0030.01213.79
5.6.160.0060.00913.92
5.6.150.0030.01014.00
5.6.140.0000.01314.31
5.6.130.0060.00613.83
5.6.120.0030.00614.22
5.6.110.0000.01414.24
5.6.100.0060.00613.87
5.6.90.0110.00413.90
5.6.80.0060.00913.88
5.6.70.0140.00013.82
5.6.60.0090.00014.04
5.6.50.0110.00313.88
5.6.40.0000.00914.10
5.6.30.0070.00413.95
5.6.20.0030.00613.93
5.6.10.0040.00813.78
5.6.00.0030.00613.90

preferences:
31.57 ms | 400 KiB | 5 Q