3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pattern = '/a/'; $limit = 10000; $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)
8.3.60.0150.00317.25
8.3.50.0110.01116.93
8.3.40.0090.00619.00
8.3.30.0130.00619.13
8.3.20.0080.00020.41
8.3.10.0060.01023.95
8.3.00.0090.00020.05
8.2.180.0110.00416.63
8.2.170.0090.00622.96
8.2.160.0040.01120.64
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0040.00418.00
8.2.110.0090.00022.50
8.2.100.0130.00018.00
8.2.90.0080.00019.60
8.2.80.0030.00618.13
8.2.70.0060.00318.12
8.2.60.0100.00318.05
8.2.50.0000.00918.13
8.2.40.0060.00319.55
8.2.30.0000.00820.12
8.2.20.0030.00618.31
8.2.10.0080.00018.41
8.2.00.0000.00718.54
8.1.280.0110.00725.92
8.1.270.0120.00620.38
8.1.260.0090.00026.35
8.1.250.0090.00028.09
8.1.240.0030.00622.70
8.1.230.0080.00617.86
8.1.220.0040.00418.16
8.1.210.0030.00518.77
8.1.200.0100.00317.73
8.1.190.0040.00417.73
8.1.180.0040.00418.10
8.1.170.0040.00419.15
8.1.160.0050.00222.19
8.1.150.0040.00419.18
8.1.140.0000.00818.00
8.1.130.0000.00718.02
8.1.120.0080.00017.87
8.1.110.0040.00417.90
8.1.100.0060.00317.91
8.1.90.0030.00517.91
8.1.80.0060.00317.88
8.1.70.0000.00917.92
8.1.60.0040.00418.00
8.1.50.0000.00817.83
8.1.40.0030.00517.99
8.1.30.0000.01018.07
8.1.20.0000.01018.09
8.1.10.0050.00317.94
8.1.00.0030.00617.92
8.0.300.0060.00318.77
8.0.290.0080.00017.13
8.0.280.0000.00718.75
8.0.270.0070.00017.51
8.0.260.0060.00317.53
8.0.250.0050.00317.32
8.0.240.0000.00717.26
8.0.230.0030.00517.32
8.0.220.0050.00217.34
8.0.210.0070.00017.20
8.0.200.0040.00417.38
8.0.190.0080.00017.35
8.0.180.0050.00317.28
8.0.170.0030.00617.26
8.0.160.0000.00717.34
8.0.150.0000.00717.25
8.0.140.0050.00317.19
8.0.130.0070.00013.71
8.0.120.0030.00617.30
8.0.110.0040.00417.33
8.0.100.0000.00817.18
8.0.90.0000.00717.27
8.0.80.0090.00617.29
8.0.70.0080.00017.28
8.0.60.0000.00817.32
8.0.50.0000.00817.44
8.0.30.0110.00917.55
8.0.20.0120.00817.58
8.0.10.0040.00417.36
8.0.00.0080.01017.17
7.4.330.0050.00015.19
7.4.320.0100.00016.82
7.4.300.0030.00316.93
7.4.290.0040.00417.07
7.4.280.0030.00616.93
7.4.270.0070.00016.87
7.4.260.0040.00416.92
7.4.250.0040.00417.01
7.4.240.0050.00317.02
7.4.230.0000.00717.03
7.4.220.0080.01316.89
7.4.210.0080.00816.87
7.4.200.0030.00517.07
7.4.160.0060.01616.96
7.4.150.0140.00717.40
7.4.140.0170.00417.86
7.4.130.0160.00516.93
7.4.120.0090.01017.03
7.4.110.0060.01216.96
7.4.100.0100.00716.96
7.4.90.0100.01416.97
7.4.80.0120.00919.39
7.4.70.0070.01117.01
7.4.60.0070.01016.89
7.4.50.0000.00916.91
7.4.40.0130.00316.77
7.4.30.0070.01816.84
7.4.00.0050.01415.51
7.3.330.0000.00513.65
7.3.320.0060.00013.73
7.3.310.0000.00716.84
7.3.300.0040.00416.78
7.3.290.0070.00016.67
7.3.280.0130.00916.80
7.3.270.0060.01217.40
7.3.260.0050.01116.84
7.3.250.0070.01216.97
7.3.240.0180.00016.93
7.3.230.0030.01616.80
7.3.210.0030.01417.08
7.3.200.0070.01716.76
7.3.190.0100.01016.93
7.3.180.0070.01016.79
7.3.170.0070.01416.66
7.3.160.0070.01016.99
7.3.120.0140.00715.23
7.3.110.0070.01315.52
7.3.100.0080.00615.48
7.3.90.0080.00815.35
7.3.80.0070.00714.93
7.3.70.0100.00315.36
7.3.60.0070.00715.36
7.3.50.0080.00415.48
7.3.40.0030.01315.40
7.3.30.0060.00615.36
7.3.20.0100.00716.83
7.3.10.0040.00917.26
7.3.00.0070.01116.93
7.2.330.0130.00616.98
7.2.320.0110.01117.04
7.2.310.0060.01216.95
7.2.300.0030.01316.93
7.2.290.0030.01417.11
7.2.250.0000.01615.46
7.2.240.0120.00915.20
7.2.230.0140.00715.17
7.2.220.0030.01015.38
7.2.210.0170.00015.47
7.2.200.0060.00615.15
7.2.190.0100.00715.25
7.2.180.0030.01315.46
7.2.170.0030.01215.13
7.2.60.0060.00917.28
7.2.00.0040.01119.79
7.1.330.0030.01416.11
7.1.320.0000.01416.07
7.1.310.0030.01416.11
7.1.300.0120.00316.02
7.1.290.0030.01416.03
7.1.280.0050.00516.09
7.1.270.0060.01016.15
7.1.260.0070.00716.18
7.1.200.0030.00716.14
7.1.100.0030.01018.29
7.1.70.0000.00817.35
7.1.60.0100.01619.13
7.1.50.0030.01017.02
7.1.00.0000.08022.47
7.0.200.0100.00315.34
7.0.60.0070.08320.05
7.0.50.0070.03718.00
7.0.40.0000.08720.09
7.0.30.0530.05020.34
7.0.20.0330.08020.13
7.0.10.0070.08020.37
7.0.00.0030.05020.12
5.6.280.0030.05329.13
5.6.210.0130.08028.58
5.6.200.0100.05726.12
5.6.190.0070.04028.35
5.6.180.3400.04728.26
5.6.170.0370.07328.22
5.6.160.0030.09028.23
5.6.150.0130.04726.05
5.6.140.0130.05326.15
5.6.130.0030.05326.14
5.6.120.0070.08728.97
5.6.110.0270.07329.02
5.6.100.0170.05728.93
5.6.90.0170.07329.06
5.6.80.0070.07728.36
5.5.350.0070.07028.29
5.5.340.0130.07725.91
5.5.330.0100.08328.24
5.5.320.0370.07328.02
5.5.310.0330.07328.04
5.5.300.0070.05725.97
5.5.290.0070.04325.83
5.5.280.0070.05328.71
5.5.270.0170.06728.65
5.5.260.0130.08328.85
5.5.250.0130.07028.53
5.5.240.3100.03328.14
5.4.450.0630.06027.48
5.4.440.0700.05727.28
5.4.430.0670.06327.31
5.4.420.0600.06027.37
5.4.410.0630.05327.25
5.4.400.0670.05027.05
5.4.390.0800.07027.15
5.4.380.0670.05027.04
5.4.370.0630.05726.89
5.4.360.0700.05327.04
5.4.350.0600.06327.20
5.4.340.0700.05027.12
5.4.320.0630.05727.15
5.4.310.0870.06726.70
5.4.300.0830.05027.17
5.4.290.0870.05327.16
5.4.280.0700.06326.97
5.4.270.0870.05027.05
5.4.260.0930.04026.84
5.4.250.0800.05327.04
5.4.240.0730.05727.04
5.4.230.0800.05727.00
5.4.220.0630.05327.04
5.4.210.0670.06327.16
5.4.200.0630.05726.83
5.4.190.0630.05326.82
5.4.180.0570.06026.78
5.4.170.0600.06027.03
5.4.160.0600.06326.93
5.4.150.0670.05726.93
5.4.140.0730.04724.35
5.4.130.0730.04724.30
5.4.120.0530.06324.33
5.4.110.0600.05724.13
5.4.100.0700.05324.35
5.4.90.0700.04324.41
5.4.80.0700.05024.43
5.4.70.0130.07024.12
5.4.60.0430.05724.20
5.4.50.0100.06724.16
5.4.40.0200.03724.32
5.4.30.0000.05724.39
5.4.20.0230.04724.30

preferences:
66.54 ms | 400 KiB | 5 Q