3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = null; echo preg_replace('/\s+/', '', $string);

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)
8.3.70.0110.00418.43
8.3.60.0110.00416.63
8.3.50.0110.00416.43
8.3.40.0110.00719.04
8.3.30.0090.00618.68
8.3.20.0030.00520.28
8.3.10.0040.00423.53
8.3.00.0080.00018.03
8.2.180.0070.00718.41
8.2.170.0070.00722.96
8.2.160.0040.01220.39
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0070.00020.51
8.2.120.0070.00026.35
8.2.110.0100.00019.13
8.2.100.0070.00418.16
8.2.90.0030.00519.23
8.2.80.0030.00618.04
8.2.70.0000.00817.88
8.2.60.0030.00617.93
8.2.50.0030.00618.10
8.2.40.0060.00322.18
8.2.30.0040.00421.04
8.2.20.0000.00818.14
8.2.10.0080.00017.89
8.2.00.0040.00417.90
8.1.280.0140.00325.92
8.1.270.0040.00421.99
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00922.59
8.1.230.0070.00717.51
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0030.00617.38
8.1.190.0060.00317.22
8.1.180.0000.00718.10
8.1.170.0060.00318.62
8.1.160.0020.00518.87
8.1.150.0040.00420.63
8.1.140.0000.00819.44
8.1.130.0030.00518.89
8.1.120.0040.00417.50
8.1.110.0050.00317.46
8.1.100.0000.00817.55
8.1.90.0000.00817.52
8.1.80.0080.00017.51
8.1.70.0070.00017.47
8.1.60.0030.00617.69
8.1.50.0040.00417.63
8.1.40.0070.00017.63
8.1.30.0060.00317.64
8.1.20.0050.00217.70
8.1.10.0080.00017.59
8.1.00.0040.00417.56
8.0.300.0040.00418.77
8.0.290.0070.00016.88
8.0.280.0000.00718.34
8.0.270.0030.00617.23
8.0.260.0030.00316.88
8.0.250.0000.00617.15
8.0.240.0000.00816.99
8.0.230.0050.00516.93
8.0.220.0070.00016.98
8.0.210.0040.00416.96
8.0.200.0030.00317.05
8.0.190.0040.00417.07
8.0.180.0050.00217.07
8.0.170.0000.00716.95
8.0.160.0030.00316.83
8.0.150.0000.00816.96
8.0.140.0030.00416.86
8.0.130.0000.00513.45
8.0.120.0040.00416.83
8.0.110.0040.00416.88
8.0.100.0070.00017.04
8.0.90.0030.00316.80
8.0.80.0030.01316.91
8.0.70.0000.00716.91
8.0.60.0040.00417.00
8.0.50.0040.00416.98
8.0.30.0090.00817.32
8.0.20.0060.01317.42
8.0.10.0000.00717.16
8.0.00.0070.01016.74
7.4.330.0030.00315.55
7.4.320.0000.00616.74
7.4.300.0030.00316.75
7.4.290.0030.00316.63
7.4.280.0080.00016.73
7.4.270.0030.00416.79
7.4.260.0030.00313.42
7.4.250.0030.00516.69
7.4.240.0080.00016.55
7.4.230.0020.00516.54
7.4.220.0030.01216.77
7.4.210.0070.00816.81
7.4.200.0000.00716.55
7.4.160.0110.00716.63
7.4.150.0120.00617.40
7.4.140.0140.00517.86
7.4.130.0060.01316.86
7.4.120.0090.01016.78
7.3.330.0060.00013.21
7.3.320.0000.00613.21
7.3.310.0040.00416.34
7.3.300.0070.00016.17
7.3.290.0000.00716.30
7.3.280.0090.00716.27
7.3.270.0070.01017.40
7.3.260.0090.00916.65
7.3.250.0070.01116.44
7.3.240.0100.00916.71
7.1.30.0290.00934.71

preferences:
48.5 ms | 400 KiB | 5 Q