3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "i want to convert this string to the following"; echo preg_replace_callback('/\b\w(?:\w{1,2}\b)?/', fn($m) => strtoupper($m[0]), $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)
8.4.120.0110.00822.73
8.4.110.0070.00718.88
8.4.100.0060.00618.84
8.4.90.0140.00818.92
8.4.80.0110.00818.70
8.4.70.0120.00918.32
8.4.60.0090.01220.53
8.4.50.0140.00618.78
8.4.40.0060.00319.70
8.4.30.0100.01018.86
8.4.20.0080.00819.89
8.4.10.0110.00719.52
8.3.250.0130.00718.76
8.3.240.0130.00616.70
8.3.230.0120.00816.79
8.3.220.0110.00718.87
8.3.210.0070.01318.57
8.3.200.0050.00516.93
8.3.190.0100.00917.17
8.3.180.0090.00916.93
8.3.170.0140.00420.47
8.3.160.0110.00716.70
8.3.150.0120.00617.10
8.3.140.0080.00020.73
8.3.130.0080.00016.66
8.3.120.0090.00618.97
8.3.110.0060.00320.94
8.3.100.0040.00424.06
8.3.90.0080.00326.77
8.3.80.0060.00317.97
8.3.70.0100.00718.43
8.3.60.0140.00716.58
8.3.50.0070.00716.70
8.3.40.0070.01322.08
8.3.30.0080.00818.92
8.3.20.0040.01121.68
8.3.10.0060.00921.91
8.3.00.0060.00919.20
8.2.290.0050.00420.59
8.2.280.0050.00518.62
8.2.270.0150.00417.21
8.2.260.0060.01217.04
8.2.250.0000.00817.11
8.2.240.0130.00617.34
8.2.230.0110.00822.58
8.2.220.0000.00837.54
8.2.210.0040.01126.77
8.2.200.0060.00316.75
8.2.190.0070.01116.58
8.2.180.0150.00616.75
8.2.170.0160.00319.14
8.2.160.0120.00418.91
8.2.150.0000.01619.02
8.2.140.0120.00320.35
8.2.130.0090.00620.43
8.2.120.0110.00419.22
8.2.110.0100.00319.52
8.2.100.0120.00419.32
8.2.90.0090.00618.85
8.2.80.0090.00619.42
8.2.70.0120.00418.84
8.2.60.0030.01318.83
8.2.50.0090.00619.00
8.2.40.0090.00618.91
8.2.30.0040.01118.97
8.2.20.0090.00618.79
8.2.10.0120.00418.71
8.2.00.0060.01018.86
8.1.330.0100.00922.20
8.1.320.0030.00516.42
8.1.310.0100.00718.74
8.1.300.0040.00818.17
8.1.290.0060.00330.84
8.1.280.0120.00625.92
8.1.270.0150.00021.93
8.1.260.0070.01021.91
8.1.250.0120.00322.05
8.1.240.0040.01118.75
8.1.230.0100.01018.76
8.1.220.0120.00318.99
8.1.210.0100.00718.68
8.1.200.0030.01318.54
8.1.190.0120.00318.52
8.1.180.0140.00318.58
8.1.170.0080.00818.63
8.1.160.0130.00318.78
8.1.150.0070.00718.86
8.1.140.0150.00018.59
8.1.130.0040.01118.83
8.1.120.0070.01018.75
8.1.110.0090.00618.73
8.1.100.0100.00719.91
8.1.90.0040.01418.61
8.1.80.0060.01019.82
8.1.70.0060.00918.68
8.1.60.0040.01118.85
8.1.50.0140.00318.80
8.1.40.0190.00918.77
8.1.30.0100.01018.90
8.1.20.0120.00319.94
8.1.10.0070.01018.84
8.1.00.0090.00618.61

preferences:
26.04 ms | 403 KiB | 5 Q