3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'The sky is blue'; echo preg_replace_callback( '/(?:[^a-z]*\K[a-z]){4}/i', fn($m) => $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)
8.4.140.0150.01417.64
8.4.130.0130.00917.93
8.4.120.0050.00420.37
8.4.110.0040.00718.74
8.4.100.0060.00418.54
8.4.90.0110.01018.79
8.4.80.0140.00518.99
8.4.70.0070.00418.10
8.4.60.0120.00918.73
8.4.50.0080.01318.56
8.4.40.0060.00320.80
8.4.30.0130.00722.30
8.4.20.0100.01019.89
8.4.10.0040.00422.03
8.3.270.0130.00716.93
8.3.260.0120.00616.75
8.3.250.0100.01118.88
8.3.240.0100.01016.58
8.3.230.0100.00916.67
8.3.220.0040.00418.93
8.3.210.0090.00916.73
8.3.200.0030.00616.91
8.3.190.0140.00616.97
8.3.180.0150.00416.68
8.3.170.0090.00918.75
8.3.160.0090.00920.51
8.3.150.0090.00918.36
8.3.140.0150.00016.71
8.3.130.0040.01118.43
8.3.120.0070.00318.88
8.3.110.0090.00018.61
8.3.100.0000.00918.25
8.3.90.0110.00418.30
8.3.80.0060.00318.33
8.3.70.0070.00718.40
8.3.60.0110.01116.75
8.3.50.0110.00316.65
8.3.40.0110.01123.73
8.3.30.0090.00618.86
8.3.20.0040.00424.18
8.3.10.0040.00424.66
8.3.00.0070.00026.16
8.2.290.0120.00420.41
8.2.280.0060.00418.48
8.2.270.0150.00417.04
8.2.260.0110.00716.95
8.2.250.0080.00016.90
8.2.240.0040.00419.27
8.2.230.0110.00420.94
8.2.220.0120.00424.06
8.2.210.0070.00726.77
8.2.200.0030.00617.00
8.2.190.0030.01316.88
8.2.180.0030.01416.75
8.2.170.0140.00019.26
8.2.160.0070.01022.96
8.2.150.0070.00025.66
8.2.140.0040.00724.66
8.2.130.0080.00026.16
8.2.120.0080.00019.95
8.2.110.0080.00020.39
8.2.100.0060.00617.84
8.2.90.0070.00317.86
8.2.80.0000.00918.83
8.2.70.0040.00417.88
8.2.60.0090.00917.63
8.2.50.0120.00617.63
8.2.40.0120.00417.75
8.2.30.0100.00717.38
8.2.20.0160.00017.63
8.2.10.0040.01217.25
8.2.00.0120.00417.75
8.1.330.0090.01022.20
8.1.320.0110.00816.59
8.1.310.0140.00418.51
8.1.300.0060.00318.34
8.1.290.0100.00018.88
8.1.280.0170.00325.92
8.1.270.0060.01024.66
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0090.00020.75
8.1.230.0070.00317.83
8.1.220.0050.00317.91
8.1.210.0080.00018.77
8.1.200.0090.00017.60
8.1.190.0150.00217.23
8.1.180.0110.00817.13
8.1.170.0060.01217.38
8.1.160.0080.00816.98
8.1.150.0120.00417.25
8.1.140.0130.00317.47
8.1.130.0130.00317.22
8.1.120.0100.00717.50
8.1.110.0130.00317.59
8.1.100.0110.00417.50
8.1.90.0160.00017.25
8.1.80.0090.01417.50
8.1.70.0100.00517.50
8.1.60.0190.00217.50
8.1.50.0110.00717.38
8.1.40.0100.00817.60
8.1.30.0130.00417.61
8.1.20.0100.00817.63
8.1.10.0150.00317.38
8.1.00.0100.00717.38
8.0.300.0040.00418.77
8.0.290.0050.00316.88
8.0.280.0160.00016.72
8.0.270.0050.01016.75
8.0.260.0080.00816.62
8.0.250.0110.00416.73
8.0.240.0150.00016.84
8.0.230.0150.00416.75
8.0.220.0110.00716.71
8.0.210.0110.00516.61
8.0.200.0130.00216.52
8.0.190.0100.00616.73
8.0.180.0130.00416.84
8.0.170.0120.00416.88
8.0.160.0160.00016.75
8.0.150.0170.00016.52
8.0.140.0110.00616.52
8.0.130.0120.00616.61
8.0.120.0130.00616.52
8.0.110.0050.01116.88
8.0.100.0120.00516.72
8.0.90.0160.00016.75
8.0.80.0130.00316.71
8.0.70.0120.00416.52
8.0.60.0100.00516.75
8.0.50.0100.00516.52
8.0.30.0070.00716.59
8.0.20.0050.01016.75
8.0.10.0140.00316.88

preferences:
29.74 ms | 403 KiB | 5 Q