3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pattern = '/a/'; $limit = 8434; $string = 'a'; for ( $i = 0; $i <= $limit; $i++ ) { $string .= 'a'; //echo strlen($string) . "\n"; //echo mb_strlen($string); } echo strlen($string)."\n"; $str2=preg_replace('#(\w)*#', '', $string); echo $str2."\n"; echo 'done';

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)
8.3.60.0000.01816.99
8.3.50.0160.00721.21
8.3.40.0040.01119.35
8.3.30.0120.00319.21
8.3.20.0040.00420.46
8.3.10.0070.00723.73
8.3.00.0050.00319.94
8.2.180.0000.01525.92
8.2.170.0100.01019.32
8.2.160.0100.01022.96
8.2.150.0050.00325.66
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0030.00617.99
8.2.110.0030.00622.32
8.2.100.0090.00318.13
8.2.90.0000.00919.56
8.2.80.0060.00318.00
8.2.70.0060.00318.00
8.2.60.0080.00018.30
8.2.50.0000.00818.07
8.2.40.0040.00419.63
8.2.30.0040.00418.43
8.2.20.0000.00818.25
8.2.10.0050.00318.33
8.2.00.0000.00718.32
8.1.280.0100.00725.92
8.1.270.0000.00824.66
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0030.00622.86
8.1.230.0060.00617.75
8.1.220.0000.00918.16
8.1.210.0000.00818.77
8.1.200.0030.00717.73
8.1.190.0030.00617.73
8.1.180.0030.00518.10
8.1.170.0040.00718.89
8.1.160.0000.00722.39
8.1.150.0050.00519.19
8.1.140.0000.00817.80
8.1.130.0000.00717.98
8.1.120.0080.00017.91
8.1.110.0090.00017.89
8.1.100.0040.00417.78
8.1.90.0040.00417.95
8.1.80.0040.00417.79
8.1.70.0030.00317.86
8.1.60.0030.00618.00
8.1.50.0000.00817.98
8.1.40.0090.00017.97
8.1.30.0030.00718.00
8.1.20.0030.00618.07
8.1.10.0030.00617.90
8.1.00.0030.00617.93
8.0.300.0000.00718.77
8.0.290.0040.00417.25
8.0.280.0000.00718.67
8.0.270.0040.00417.28
8.0.260.0060.00017.57
8.0.250.0050.00317.25
8.0.240.0030.00317.39
8.0.230.0020.00517.34
8.0.220.0040.00417.30
8.0.210.0080.00017.34
8.0.200.0000.00717.41
8.0.190.0000.00917.32
8.0.180.0000.00817.28
8.0.170.0070.00017.23
8.0.160.0020.00517.25
8.0.150.0040.00417.29
8.0.140.0080.00017.34
8.0.130.0000.00613.71
8.0.120.0090.00017.32
8.0.110.0050.00317.32
8.0.100.0040.00417.33
8.0.90.0040.00417.38
8.0.80.0090.00617.36
8.0.70.0000.00817.18
8.0.60.0040.00417.39
8.0.50.0040.00417.34
8.0.30.0130.00817.62
8.0.20.0090.01117.55
8.0.10.0030.00517.38
8.0.00.0090.00917.22
7.4.330.0030.00315.08
7.4.320.0050.00516.82
7.4.300.0070.00017.04
7.4.290.0000.00716.96
7.4.280.0030.00616.95
7.4.270.0080.00016.96
7.4.260.0080.00017.02
7.4.250.0080.00017.03
7.4.240.0020.00617.01
7.4.230.0040.00417.12
7.4.220.0100.01017.13
7.4.210.0100.01216.96
7.4.200.0080.00016.88
7.4.160.0130.00316.93
7.4.150.0120.00817.40
7.4.140.0130.01317.86
7.4.130.0060.01216.85
7.4.120.0090.00916.90
7.4.110.0070.01116.74
7.4.100.0120.01216.83
7.4.90.0090.01317.04
7.4.80.0170.00419.39
7.4.70.0120.00616.83
7.4.60.0120.00616.98
7.4.50.0040.00416.86
7.4.40.0090.00917.11
7.4.30.0130.01017.12
7.4.00.0030.01515.10
7.3.330.0000.00513.49
7.3.320.0000.00513.51
7.3.310.0050.00516.84
7.3.300.0000.00816.76
7.3.290.0040.00416.61
7.3.280.0090.00716.82
7.3.270.0150.00317.40
7.3.260.0090.00816.88
7.3.250.0140.01016.80
7.3.240.0130.00317.11
7.3.230.0080.01717.06
7.3.210.0090.01016.96
7.3.200.0070.01016.82
7.3.190.0090.01317.07
7.3.180.0220.00316.75
7.3.170.0090.01316.97
7.3.160.0070.01016.96
7.2.330.0120.00617.06
7.2.320.0090.01217.03
7.2.310.0100.01317.04
7.2.300.0090.00617.05
7.2.290.0090.00816.88
7.2.60.0040.00417.10
7.2.00.0040.00719.80
7.1.200.0070.00716.10
7.1.100.0030.00818.24
7.1.70.0080.00017.48
7.1.60.0060.01919.13
7.1.50.0030.01017.19
7.1.00.0070.07322.38
7.0.200.0080.00815.20
7.0.60.0070.08719.98
7.0.50.0030.04017.93
7.0.40.0070.08720.35
7.0.30.0530.07320.20
7.0.20.0230.08320.04
7.0.10.0170.04720.21
7.0.00.0100.08720.23
5.6.280.0030.05728.80
5.6.210.0030.05028.69
5.6.200.0200.06026.12
5.6.190.0030.04328.27
5.6.180.3370.05028.47
5.6.170.0330.08728.26
5.6.160.0170.05028.21
5.6.150.0130.07726.11
5.6.140.0030.05026.16
5.6.130.0100.06026.15
5.6.120.0130.09028.96
5.6.110.0030.08029.09
5.6.100.0230.06728.96
5.6.90.0100.09328.86
5.6.80.0130.06028.51
5.6.70.4030.04328.35
5.5.350.0130.07328.42
5.5.340.0100.08025.96
5.5.330.0100.07328.24
5.5.320.0300.08028.17
5.5.310.0300.04028.11
5.5.300.0070.04325.97
5.5.290.0030.04025.86
5.5.280.0100.07028.81
5.5.270.0200.06728.85
5.5.260.0100.09028.84
5.5.250.0130.05328.69
5.5.240.0300.05728.25
5.4.450.0900.05327.05
5.4.440.0930.05727.14
5.4.430.1070.06726.81
5.4.420.0870.06027.12
5.4.410.0800.06027.16
5.4.400.0870.05726.64
5.4.390.0930.05726.86
5.4.380.0970.05726.87
5.4.370.1100.06726.98
5.4.360.0800.05726.80
5.4.350.0830.05726.88
5.4.340.0870.05027.01
5.4.320.0700.05726.86
5.4.310.0870.05026.86
5.4.300.0770.05726.85
5.4.290.0900.08326.71
5.4.280.0900.05726.85
5.4.270.0800.05326.62
5.4.260.0700.05326.66
5.4.250.0830.08026.48
5.4.240.0870.05026.69
5.4.230.0870.05726.66
5.4.220.0700.05326.89
5.4.210.0830.05026.67
5.4.200.1000.03326.86
5.4.190.0770.05726.85
5.4.180.0670.05326.61
5.4.170.0700.05726.98
5.4.160.0800.07026.84
5.4.150.0800.06026.90
5.4.140.0770.07323.97
5.4.130.0830.06323.91
5.4.120.0830.06023.98
5.4.110.0730.06324.16
5.4.100.0730.05324.18
5.4.90.0870.06323.79
5.4.80.0800.05723.39
5.4.70.0070.08023.32
5.4.60.0270.04023.12
5.4.50.0030.03323.18
5.4.40.0100.04023.14
5.4.30.0100.06023.30
5.4.20.0300.05323.30

preferences:
59.09 ms | 401 KiB | 5 Q