3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = ''; var_dump(isset($var)); echo PHP_EOL; var_dump(!empty($var)); echo PHP_EOL; if ($var) { echo 'var'; } else { echo 'not var'; }

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)
8.3.60.0040.01118.18
8.3.50.0080.00817.90
8.3.40.0060.00918.67
8.3.30.0110.00318.69
8.3.20.0000.01420.29
8.3.10.0040.00421.91
8.3.00.0000.00820.99
8.2.180.0070.00716.38
8.2.170.0140.00022.96
8.2.160.0170.00319.25
8.2.150.0000.00724.18
8.2.140.0080.00024.66
8.2.130.0040.00419.48
8.2.120.0060.00326.35
8.2.110.0000.01122.25
8.2.100.0000.01117.59
8.2.90.0000.00819.06
8.2.80.0000.00817.97
8.2.70.0050.00317.50
8.2.60.0080.00017.93
8.2.50.0000.00818.10
8.2.40.0040.00420.64
8.2.30.0000.00720.66
8.2.20.0000.00717.66
8.2.10.0000.00717.97
8.2.00.0040.00418.05
8.1.280.0170.00325.92
8.1.270.0040.00423.79
8.1.260.0080.00028.09
8.1.250.0050.00328.09
8.1.240.0060.00323.92
8.1.230.0040.00717.42
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0050.00817.13
8.1.190.0030.00617.25
8.1.180.0040.00418.10
8.1.170.0050.00318.57
8.1.160.0040.00420.89
8.1.150.0000.00718.80
8.1.140.0000.00719.57
8.1.130.0000.00717.63
8.1.120.0070.00017.35
8.1.110.0040.00417.30
8.1.100.0000.00717.50
8.1.90.0080.00017.45
8.1.80.0030.00417.39
8.1.70.0040.00417.30
8.1.60.0040.00417.59
8.1.50.0040.00417.52
8.1.40.0040.00417.59
8.1.30.0030.00517.70
8.1.20.0040.00417.59
8.1.10.0110.00017.28
8.1.00.0110.00017.41
8.0.300.0070.00018.77
8.0.290.0030.00616.63
8.0.280.0030.00318.49
8.0.270.0000.00717.25
8.0.260.0040.00417.11
8.0.250.0000.00716.87
8.0.240.0030.00316.97
8.0.230.0070.00016.83
8.0.220.0000.00716.93
8.0.210.0030.00316.89
8.0.200.0070.00016.93
8.0.190.0040.00416.92
8.0.180.0100.00016.89
8.0.170.0070.00016.85
8.0.160.0040.00416.80
8.0.150.0070.00016.90
8.0.140.0000.00716.74
8.0.130.0050.00013.39
8.0.120.0000.00716.83
8.0.110.0040.00416.72
8.0.100.0040.00416.92
8.0.90.0040.00416.69
8.0.80.0060.00916.88
8.0.70.0080.00016.95
8.0.60.0000.00716.78
8.0.50.0070.00016.76
8.0.30.0150.00417.05
8.0.20.0090.01117.40
8.0.10.0040.00416.89
8.0.00.0080.01216.69
7.4.330.0050.00015.08
7.4.320.0000.00616.51
7.4.300.0060.00016.57
7.4.290.0030.00316.61
7.4.280.0070.00016.43
7.4.270.0030.00316.36
7.4.260.0030.00616.60
7.4.250.0000.00716.46
7.4.240.0040.00416.52
7.4.230.0000.00716.37
7.4.220.0030.01516.44
7.4.210.0100.00316.46
7.4.200.0030.00316.61
7.4.160.0060.00916.55
7.4.150.0060.01917.40
7.4.140.0110.01117.86
7.4.130.0130.00616.43
7.4.120.0070.01416.43
7.4.110.0110.00616.50
7.4.100.0080.01116.38
7.4.90.0130.00316.39
7.4.80.0080.00819.39
7.4.70.0100.00616.52
7.4.60.0150.00616.54
7.4.50.0080.00316.29
7.4.40.0080.01216.55
7.4.30.0070.01016.55
7.4.00.0090.00614.90
7.3.330.0050.00013.13
7.3.320.0000.00512.88
7.3.310.0000.00716.11
7.3.300.0030.00316.05
7.3.290.0080.00616.14
7.3.280.0080.01016.15
7.3.270.0030.01317.40
7.3.260.0170.00016.34
7.3.250.0110.01016.16
7.3.240.0100.00716.25
7.3.230.0100.00716.39
7.3.210.0070.01016.50
7.3.200.0070.01116.38
7.3.190.0100.00616.41
7.3.180.0030.01316.36
7.3.170.0110.00516.31
7.3.160.0100.00716.17
7.3.120.0120.00614.91
7.3.110.0120.00614.92
7.3.100.0090.00614.68
7.3.90.0120.00314.65
7.3.80.0060.00614.59
7.3.70.0060.00914.46
7.3.60.0040.01114.64
7.3.50.0090.00014.60
7.3.40.0090.00314.71
7.3.30.0040.01114.82
7.3.20.0070.00416.59
7.3.10.0060.00316.68
7.3.00.0030.00616.61
7.2.330.0080.01216.65
7.2.320.0080.00816.58
7.2.310.0060.01116.64
7.2.300.0070.01016.24
7.2.290.0040.01216.35
7.2.250.0150.00415.13
7.2.240.0000.01715.03
7.2.230.0000.01114.80
7.2.220.0080.00415.03
7.2.210.0040.00815.11
7.2.200.0030.00714.82
7.2.190.0000.01514.69
7.2.180.0080.00614.88
7.2.170.0040.00414.95
7.2.60.0120.00316.61
7.2.00.0030.01319.36
7.1.330.0070.01015.89
7.1.320.0000.01215.82
7.1.310.0030.01315.51
7.1.300.0060.00915.66
7.1.290.0000.01315.72
7.1.280.0040.00415.69
7.1.270.0000.01015.75
7.1.260.0000.01215.73
7.1.200.0070.00715.83
7.1.100.0050.00818.01
7.1.70.0030.00717.20
7.1.60.0070.00717.22
7.1.00.0030.07722.44
7.0.200.0030.01316.80
7.0.60.0000.04321.64
7.0.50.0130.07317.78
7.0.40.0770.06720.12
7.0.30.0370.05320.19
7.0.20.1100.06320.22
7.0.10.0670.07720.15
7.0.00.0170.06019.99
5.6.280.0000.07721.12
5.6.210.0100.08020.47
5.6.200.0030.04018.10
5.6.190.0170.07720.51
5.6.180.0330.06320.35
5.6.170.0530.05720.39
5.6.160.0300.04720.36
5.6.150.0070.07020.30
5.6.140.0070.07320.44
5.6.130.0200.05720.35
5.6.120.0230.05320.33
5.6.110.0100.06720.30
5.6.100.0230.06320.13
5.6.90.0600.05720.27
5.6.80.0170.05719.64
5.6.70.0200.05319.70
5.6.60.0170.07719.82
5.6.50.0270.06719.80
5.6.40.0200.05319.77
5.6.30.0230.05319.66
5.6.20.0330.06019.66
5.6.10.0230.06319.80
5.6.00.0270.07319.56
5.5.350.0130.04020.42
5.5.340.0130.07717.91
5.5.330.0200.05720.33
5.5.320.0130.06020.36
5.5.310.0630.06320.26
5.5.300.0170.06019.91
5.5.290.0200.05320.10
5.5.280.0130.06020.32
5.5.270.0130.05720.05
5.5.260.0530.06020.13
5.5.250.0500.06319.82
5.5.240.0170.06019.50
5.5.230.0300.06719.32
5.5.220.0100.06319.51
5.5.210.0100.07019.48
5.5.200.0170.06719.68
5.5.190.0170.06319.48
5.5.180.0600.08319.48
5.5.160.0430.06319.59
5.5.150.0270.06719.48
5.5.140.0200.06019.59
5.5.130.0370.08019.47
5.5.120.0570.05319.30
5.5.110.0370.04719.55
5.5.100.0300.04319.35
5.5.90.0130.06319.36
5.5.80.0130.06019.38
5.5.70.0230.05019.38
5.5.60.0270.05019.18
5.5.50.0400.05719.56
5.5.40.0200.05719.46
5.5.30.0200.06019.56
5.5.20.0230.05019.41
5.5.10.0170.06319.32
5.5.00.0170.06019.39

preferences:
60.56 ms | 400 KiB | 5 Q