3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'Павел Дуров'; $a = mb_strtolower($a); print_r(preg_quote($a));

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)
8.3.40.0110.00418.72
8.3.30.0110.00418.73
8.3.20.0090.00020.18
8.3.10.0070.00023.52
8.3.00.0000.00722.08
8.2.170.0140.00022.96
8.2.160.0070.00718.88
8.2.150.0040.01125.66
8.2.140.0040.00424.66
8.2.130.0040.00421.00
8.2.120.0080.00026.35
8.2.110.0030.00721.17
8.2.100.0120.00317.78
8.2.90.0040.00419.27
8.2.80.0000.00817.97
8.2.70.0060.00317.50
8.2.60.0040.00417.80
8.2.50.0000.00818.10
8.2.40.0020.00520.54
8.2.30.0050.00320.93
8.2.20.0040.00417.94
8.2.10.0030.00518.11
8.2.00.0030.00618.02
8.1.270.0040.00423.99
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0030.00623.87
8.1.230.0080.00419.15
8.1.220.0070.00017.74
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0060.00317.23
8.1.180.0000.00718.10
8.1.170.0030.00618.64
8.1.160.0040.00419.00
8.1.150.0070.00018.81
8.1.140.0070.00019.47
8.1.130.0000.00718.95
8.1.120.0040.00417.47
8.1.110.0050.00317.35
8.1.100.0030.00517.37
8.1.90.0000.00717.45
8.1.80.0040.00417.36
8.1.70.0030.00317.40
8.1.60.0080.00017.64
8.1.50.0000.00817.41
8.1.40.0020.00517.49
8.1.30.0030.00617.68
8.1.20.0050.00217.70
8.1.10.0000.00817.43
8.1.00.0040.00417.32
8.0.300.0030.00418.77
8.0.290.0070.00016.58
8.0.280.0000.00818.35
8.0.270.0030.00317.15
8.0.260.0030.00316.76
8.0.250.0000.00716.85
8.0.240.0030.00316.95
8.0.230.0040.00416.82
8.0.220.0030.00316.83
8.0.210.0030.00316.96
8.0.200.0030.00316.87
8.0.190.0040.00416.94
8.0.180.0060.00516.76
8.0.170.0030.00316.80
8.0.160.0070.00016.94
8.0.150.0050.00316.64
8.0.140.0040.00416.89
8.0.130.0030.00313.33
8.0.120.0000.00916.77
8.0.110.0040.00416.85
8.0.100.0000.00716.87
8.0.90.0080.00016.88
8.0.80.0100.01016.89
8.0.70.0040.00416.78
8.0.60.0000.00716.92
8.0.50.0000.00716.89
8.0.30.0120.00816.98
8.0.20.0160.00617.40
8.0.10.0000.00716.73
8.0.00.0150.00816.70
7.4.330.0030.00315.55
7.4.320.0060.00016.51
7.4.300.0030.00316.38
7.4.290.0000.00816.47
7.4.280.0030.00616.52
7.4.270.0000.00716.59
7.4.260.0000.00716.48
7.4.250.0000.00816.57
7.4.240.0000.00716.51
7.4.230.0070.00016.42
7.4.220.0120.00616.57
7.4.210.0080.00616.61
7.4.200.0030.00316.48
7.4.160.0070.01216.34
7.4.150.0120.00617.40
7.4.140.0130.00717.86
7.4.130.0180.00716.50
7.4.120.0100.01016.57
7.4.110.0030.01516.46
7.4.100.0160.00716.36
7.4.90.0030.01316.42
7.4.80.0130.00319.39
7.4.70.0090.00616.34
7.4.60.0070.01016.36
7.4.50.0100.00616.37
7.4.40.0090.00616.37
7.4.30.0000.01616.45
7.4.00.0100.00714.69
7.3.330.0030.00313.09
7.3.320.0000.00613.09
7.3.310.0030.00316.13
7.3.300.0030.00316.25
7.3.290.0070.00016.09
7.3.280.0090.00816.25
7.3.270.0130.00717.40
7.3.260.0120.00516.21
7.3.250.0100.00816.24
7.3.240.0080.01016.22
7.3.230.0070.01416.36
7.3.210.0090.00616.13
7.3.200.0100.01016.13
7.3.190.0000.01716.48
7.3.180.0110.00716.35
7.3.170.0060.01516.14
7.3.160.0080.00816.12
7.3.10.0030.00616.59
7.3.00.0060.00916.34
7.2.330.0070.01116.57
7.2.320.0170.00016.39
7.2.310.0120.00916.58
7.2.300.0080.00916.67
7.2.290.0100.00716.43
7.2.130.0090.00316.82
7.2.120.0060.00916.76
7.2.110.0040.01116.94
7.2.100.0000.01116.91
7.2.90.0700.01215.71
7.2.80.0520.00915.58
7.2.70.0420.00916.02
7.2.60.0410.01015.88
7.2.50.0090.00915.80
7.2.40.0040.01315.81
7.2.30.0650.00615.80
7.2.20.0250.00715.85
7.2.10.0090.00815.63
7.2.00.0070.01015.80
7.1.250.0030.00715.68
7.1.210.2020.00713.56
7.1.200.0470.01213.64
7.1.190.0070.00713.95
7.1.180.1020.00613.91
7.1.170.0630.00613.76
7.1.160.0690.00713.60
7.1.150.0340.00713.51
7.1.140.0310.00713.86
7.1.130.0250.00013.91
7.1.120.0930.00013.89
7.1.110.0270.00013.82
7.1.100.0520.01413.96
7.1.90.0050.00713.98
7.1.80.0970.00314.02
7.1.70.0100.00613.77
7.1.60.2270.01331.93
7.1.50.0330.00631.62
7.1.40.0580.01031.64
7.1.30.0160.02331.68
7.1.20.0270.00331.90
7.1.10.0790.00713.91
7.1.00.0060.00913.90
7.0.310.0740.00613.39
7.0.300.0460.00413.25
7.0.290.0470.01013.52
7.0.280.1130.00713.51
7.0.270.0030.01013.30
7.0.260.0070.00413.63
7.0.250.0090.00913.29
7.0.240.0570.00713.62
7.0.230.0120.00213.52
7.0.220.0400.00613.67
7.0.210.0110.00913.48
7.0.200.0280.00913.70
7.0.190.0070.01013.56
7.0.180.1370.00713.49
7.0.170.1320.01013.40
7.0.160.0130.00313.64
7.0.150.0310.00713.71
7.0.140.0770.01013.14
7.0.130.1360.00713.78
7.0.120.0050.01413.57
7.0.110.0090.00813.38
7.0.100.0070.01013.68
7.0.90.1590.00613.64
7.0.80.1600.00713.39
7.0.70.1690.00313.33
7.0.60.2010.01013.53
7.0.50.1970.00313.70
7.0.40.1350.00713.68
7.0.30.1250.00013.69
7.0.20.1380.00013.66
7.0.10.1700.00713.60
7.0.00.0070.00713.67

preferences:
50.1 ms | 400 KiB | 5 Q