3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "Союз Советских Социалистических Республик"; $expr = '/(?<=\s|^)\w/iu'; preg_match_all($expr, $string, $matches); $result = implode('', $matches[0]); echo $result = strtoupper($result);

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)
8.4.120.0110.00822.66
8.4.110.0090.01322.32
8.4.100.0130.00818.17
8.4.90.0130.00618.07
8.4.80.0130.00717.97
8.4.70.0230.00918.63
8.4.60.0140.00618.70
8.4.50.0240.01117.89
8.4.40.0250.00517.81
8.4.30.0250.00819.13
8.4.20.0260.00819.25
8.4.10.0240.01019.88
8.3.250.0110.00618.79
8.3.240.0090.00916.85
8.3.230.0130.00716.86
8.3.220.0120.00617.07
8.3.210.0110.00716.76
8.3.200.0040.00517.07
8.3.190.0210.00716.78
8.3.180.0250.00716.74
8.3.170.0210.00716.76
8.3.160.0260.00716.73
8.3.150.0260.00517.00
8.3.140.0250.00816.88
8.3.130.0170.00817.67
8.3.120.0200.00718.73
8.3.110.0170.00918.90
8.3.100.0150.00916.95
8.3.90.0190.00821.76
8.3.80.0230.00717.57
8.3.70.0350.00716.64
8.3.60.0320.01216.74
8.3.50.0230.00617.92
8.3.40.0270.00718.63
8.3.30.0200.00818.49
8.3.20.0150.00721.08
8.3.10.0130.00721.00
8.3.00.0170.00721.35
8.2.290.0090.01020.57
8.2.280.0170.00518.52
8.2.270.0220.00716.75
8.2.260.0170.00716.65
8.2.250.0150.00916.81
8.2.240.0190.00616.79
8.2.230.0150.01019.60
8.2.220.0200.00420.43
8.2.210.0190.00521.51
8.2.200.0150.00916.73
8.2.190.0240.00616.82
8.2.180.0250.00619.68
8.2.170.0270.01118.46
8.2.160.0350.00518.79
8.2.150.0200.00619.86
8.2.140.0180.00720.63
8.2.130.0170.00522.09
8.2.120.0170.00320.53
8.2.110.0170.00520.59
8.2.100.0170.00619.39
8.2.90.0190.00719.73
8.2.80.0150.00819.67
8.2.70.0200.00719.47
8.2.60.0190.00719.57
8.2.50.0170.00819.62
8.2.40.0190.00719.69
8.2.30.0190.00419.30
8.2.20.0160.00619.64
8.2.10.0150.00519.16
8.2.00.0120.00519.02
8.1.330.0130.00718.57
8.1.320.0200.00817.08
8.1.310.0220.00717.33
8.1.300.0180.00916.83
8.1.290.0160.00823.50
8.1.280.0280.00719.58
8.1.270.0180.00721.12
8.1.260.0170.00622.51
8.1.250.0150.00722.87
8.1.240.0140.00720.06
8.1.230.0160.00619.85
8.1.220.0160.00819.21
8.1.210.0170.00719.40
8.1.200.0160.00619.07
8.1.190.0160.00619.22
8.1.180.0170.00619.26
8.1.170.0180.00619.54
8.1.160.0160.00619.13
8.1.150.0150.00719.13
8.1.140.0170.00518.96
8.1.130.0120.00618.99
8.1.120.0130.00618.78
8.1.110.0120.00718.59
8.1.100.0140.00618.65
8.1.90.0140.00418.54
8.1.80.0130.00518.67
8.1.70.0140.00618.56
8.1.60.0150.00618.62
8.1.50.0160.00618.57
8.1.40.0150.00818.48
8.1.30.0140.00718.53
8.1.20.0160.00618.65
8.1.10.0160.00718.53
8.1.00.0160.00618.46
8.0.300.0160.00718.95
8.0.290.0200.00618.63
8.0.280.0180.00618.60
8.0.270.0150.00618.50
8.0.260.0180.00318.33
8.0.250.0140.00618.25
8.0.240.0150.00418.14
8.0.230.0130.00618.01
8.0.220.0150.00418.01
8.0.210.0130.00617.99
8.0.200.0160.00418.03
8.0.190.0160.00418.03
8.0.180.0140.00518.03
8.0.170.0150.00518.02
8.0.160.0140.00618.03
8.0.150.0140.00717.95
8.0.140.0140.00517.95
8.0.130.0140.00517.93
8.0.120.0140.00517.99
8.0.110.0130.00518.01
8.0.100.0140.00417.96
8.0.90.0160.00418.02
8.0.80.0150.00518.08
8.0.70.0140.00418.00
8.0.60.0120.00717.96
8.0.50.0150.00418.00
8.0.30.0130.00518.00
8.0.20.0150.00418.07
8.0.10.0140.00418.00
7.4.330.0150.00416.90
7.4.320.0180.00517.84
7.4.300.0160.00517.79
7.4.290.0170.00517.79
7.4.280.0160.00617.78
7.4.270.0160.00517.76
7.4.260.0150.00617.76
7.4.250.0160.00417.81
7.4.240.0140.00517.76
7.4.230.0150.00617.78
7.4.220.0160.00517.77
7.4.210.0150.00617.79
7.4.200.0160.00517.76
7.4.190.0160.00517.79
7.4.180.0160.00517.78
7.4.160.0170.00417.80
7.4.150.0140.00617.78
7.4.140.0160.00417.70
7.4.130.0160.00517.74
7.4.120.0150.00617.76
7.4.110.0150.00717.75
7.4.100.0160.00617.77
7.4.90.0150.00617.75
7.4.80.0170.00517.73
7.4.70.0190.00417.72
7.4.60.0160.00517.72
7.4.50.0160.00617.70
7.4.40.0140.00617.69
7.4.30.0160.00517.76
7.4.20.0140.00617.72
7.4.10.0170.00417.72
7.4.00.0140.00517.74

preferences:
29.14 ms | 403 KiB | 5 Q