3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "0"; $c = $b = empty($a); $b = 1; $d = ++$b + $a; echo $b;

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)
8.3.60.0120.00616.50
8.3.50.0000.01817.88
8.3.40.0150.00018.80
8.3.30.0040.01118.51
8.3.20.0040.00419.16
8.3.10.0040.00423.66
8.3.00.0040.00420.79
8.2.180.0060.01218.04
8.2.170.0070.00722.96
8.2.160.0100.00721.91
8.2.150.0030.00724.18
8.2.140.0080.00024.66
8.2.130.0050.00318.03
8.2.120.0080.00026.35
8.2.110.0030.00722.07
8.2.100.0100.00317.97
8.2.90.0030.00617.63
8.2.80.0000.00917.97
8.2.70.0030.00517.91
8.2.60.0080.00018.16
8.2.50.0040.00418.10
8.2.40.0040.00419.46
8.2.30.0040.00419.17
8.2.20.0000.00718.02
8.2.10.0000.00717.99
8.2.00.0040.00417.79
8.1.280.0060.00925.92
8.1.270.0050.00318.65
8.1.260.0030.00526.35
8.1.250.0040.00428.09
8.1.240.0030.00622.47
8.1.230.0110.00018.90
8.1.220.0040.00417.77
8.1.210.0050.00318.77
8.1.200.0030.00817.23
8.1.190.0080.00017.10
8.1.180.0000.00718.10
8.1.170.0030.00518.57
8.1.160.0000.00718.69
8.1.150.0080.00018.77
8.1.140.0070.00022.04
8.1.130.0030.00320.25
8.1.120.0040.00417.39
8.1.110.0000.00817.27
8.1.100.0040.00417.39
8.1.90.0000.00717.36
8.1.80.0000.00717.35
8.1.70.0000.00917.40
8.1.60.0040.00417.55
8.1.50.0080.00017.37
8.1.40.0080.00017.34
8.1.30.0040.00417.56
8.1.20.0050.00217.41
8.1.10.0050.00217.53
8.1.00.0040.00417.33
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0000.00718.43
8.0.270.0070.00017.11
8.0.260.0030.00318.35
8.0.250.0000.00616.99
8.0.240.0040.00416.90
8.0.230.0030.00316.84
8.0.220.0030.00716.84
8.0.210.0000.00816.90
8.0.200.0000.00716.91
8.0.190.0000.00716.98
8.0.180.0000.00716.79
8.0.170.0040.00416.96
8.0.160.0000.00716.78
8.0.150.0070.00316.89
8.0.140.0070.00016.71
8.0.130.0070.00013.31
8.0.120.0030.00616.94
8.0.110.0000.00816.83
8.0.100.0040.00416.75
8.0.90.0000.00716.79
8.0.80.0060.01216.87
8.0.70.0080.00016.77
8.0.60.0000.00816.93
8.0.50.0080.00016.75
8.0.30.0100.01017.03
8.0.20.0180.00017.40
8.0.10.0050.00216.98
8.0.00.0110.01116.88
7.4.330.0000.00415.55
7.4.320.0050.00216.54
7.4.300.0060.00016.43
7.4.290.0030.00316.45
7.4.280.0040.00416.32
7.4.270.0040.00416.54
7.4.260.0040.00416.41
7.4.250.0000.00816.30
7.4.240.0030.00316.37
7.4.230.0000.00716.41
7.4.220.0040.00416.56
7.4.210.0080.01016.45
7.4.200.0000.00716.60
7.4.160.0060.01316.37
7.4.140.0120.00717.86
7.4.130.0090.00916.43
7.4.120.0110.00816.38
7.4.110.0050.01216.54
7.4.100.0040.01216.42
7.4.90.0140.00716.35
7.4.80.0070.01019.39
7.4.70.0030.01316.52
7.4.60.0090.00916.47
7.4.50.0100.00716.50
7.4.40.0130.00316.31
7.3.330.0020.00213.24
7.3.320.0050.00013.00
7.3.310.0040.00416.31
7.3.300.0050.00216.25
7.3.290.0030.00316.13
7.3.280.0080.00816.25
7.3.260.0110.00916.41
7.3.240.0070.01116.45
7.3.230.0030.01316.34
7.3.210.0120.00316.61
7.3.200.0110.00716.26
7.3.190.0120.00916.46
7.3.180.0100.01016.60
7.3.170.0090.00916.63
7.3.160.0110.01116.30
7.2.330.0120.00616.69
7.2.320.0060.01416.76
7.2.310.0120.00816.70
7.2.300.0140.00316.51
7.2.290.0030.01416.45

preferences:
50.24 ms | 400 KiB | 5 Q