3v4l.org

run code in 300+ PHP versions simultaneously
<?php $limit = 8434; $string = 'a'; for ( $i = 0; $i <= $limit; $i++ ) { $string .= 'a'; } echo strlen($string)."\n"; $str2=preg_replace('#(?<name>.)*#', '', $string); 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)
8.3.40.0190.00018.91
8.3.30.0130.00719.08
8.3.20.0060.00320.51
8.3.10.0000.00823.68
8.3.00.0080.00020.05
8.2.170.0090.00622.96
8.2.160.0140.00720.81
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0050.00326.16
8.2.120.0000.00918.13
8.2.110.0090.00020.83
8.2.100.0090.00318.28
8.2.90.0050.00319.46
8.2.80.0050.00318.13
8.2.70.0060.00618.00
8.2.60.0080.00018.30
8.2.50.0080.00018.13
8.2.40.0000.00919.59
8.2.30.0030.00518.50
8.2.20.0030.00518.12
8.2.10.0000.00818.32
8.2.00.0030.00618.45
8.1.270.0100.01020.75
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00724.11
8.1.230.0080.00423.13
8.1.220.0060.00318.16
8.1.210.0050.00318.77
8.1.200.0070.00317.85
8.1.190.0050.00317.61
8.1.180.0000.00918.10
8.1.170.0070.00319.07
8.1.160.0000.00722.24
8.1.150.0040.00419.08
8.1.140.0030.00617.80
8.1.130.0070.00017.93
8.1.120.0000.00817.91
8.1.110.0080.00017.91
8.1.100.0050.00317.80
8.1.90.0070.00017.79
8.1.80.0000.00717.87
8.1.70.0050.00217.93
8.1.60.0050.00317.98
8.1.50.0080.00017.87
8.1.40.0030.00517.84
8.1.30.0050.00518.08
8.1.20.0040.00417.93
8.1.10.0050.00317.84
8.1.00.0000.00817.81
8.0.300.0030.00518.77
8.0.290.0000.00817.13
8.0.280.0040.00418.75
8.0.270.0040.00417.51
8.0.260.0030.00317.47
8.0.250.0000.00717.30
8.0.240.0000.00717.39
8.0.230.0000.00717.43
8.0.220.0000.00817.33
8.0.210.0040.00417.39
8.0.200.0030.00317.38
8.0.190.0000.00817.40
8.0.180.0030.00517.33
8.0.170.0060.00317.38
8.0.160.0030.00517.26
8.0.150.0040.00417.18
8.0.140.0000.00817.25
8.0.130.0030.00313.75
8.0.120.0040.00417.22
8.0.110.0030.00517.25
8.0.100.0040.00417.36
8.0.90.0050.00317.23
8.0.80.0030.01217.27
8.0.70.0050.00317.34
8.0.60.0000.00817.16
8.0.50.0040.00417.13
8.0.30.0130.00517.61
8.0.20.0140.00817.49
8.0.10.0030.00517.45
8.0.00.0110.00917.26
7.4.330.0050.00015.08
7.4.320.0000.00616.92
7.4.300.0070.00016.94
7.4.290.0000.00716.97
7.4.280.0080.00417.03
7.4.270.0030.00316.86
7.4.260.0100.00016.82
7.4.250.0000.00816.81
7.4.240.0020.00517.00
7.4.230.0000.00717.07
7.4.220.0110.00917.07
7.4.210.0000.01417.15
7.4.200.0040.00417.06
7.4.160.0080.00816.77
7.4.150.0120.00617.40
7.4.140.0100.01417.86
7.4.130.0130.01016.88
7.4.120.0140.00517.03
7.4.110.0140.00416.96
7.4.100.0120.00616.93
7.4.90.0180.00616.97
7.4.80.0090.00919.39
7.4.70.0120.01216.96
7.4.60.0100.00716.94
7.4.50.0040.00417.00
7.4.40.0070.01016.77
7.4.30.0140.00917.11
7.4.10.0120.00815.29
7.4.00.0050.01215.37
7.3.330.0050.00013.51
7.3.320.0000.00513.65
7.3.310.0050.00316.77
7.3.300.0040.00416.68
7.3.290.0150.00316.79
7.3.280.0070.01016.79
7.3.270.0000.01817.40
7.3.260.0130.00716.78
7.3.250.0070.01116.88
7.3.240.0090.01116.79
7.3.230.0110.01116.80
7.3.210.0070.01016.87
7.3.200.0030.01316.87
7.3.190.0100.00716.78
7.3.180.0090.00617.10
7.3.170.0150.00916.99
7.3.160.0150.00916.66
7.3.130.0070.01415.48
7.3.120.0090.00615.47
7.3.110.0040.01214.98
7.3.100.0070.00715.50
7.3.90.0070.01115.33
7.3.80.0080.00315.63
7.3.70.0060.00615.27
7.3.60.0000.00915.34
7.3.50.0000.01415.08
7.3.40.0030.01115.22
7.3.30.0120.00415.36
7.3.20.0030.01417.13
7.3.10.0030.01017.12
7.3.00.0100.00316.96
7.2.330.0100.00717.07
7.2.320.0060.01216.78
7.2.310.0090.01016.98
7.2.300.0110.00717.00
7.2.290.0110.00516.91
7.2.260.0110.00915.46
7.2.250.0070.01415.45
7.2.240.0030.01315.50
7.2.230.0070.01115.45
7.2.220.0040.00815.41
7.2.210.0100.00315.31
7.2.200.0110.00415.48
7.2.190.0040.00715.51
7.2.180.0000.01115.45
7.2.170.0060.00615.45
7.2.160.0000.00915.41
7.2.150.0030.00617.03
7.2.140.0000.01817.34
7.2.130.0090.00417.05
7.2.120.0030.01216.90
7.2.110.0040.01017.19
7.2.100.0040.01117.23
7.2.90.0070.00716.90
7.2.80.0030.01016.97
7.2.70.0060.00617.04
7.2.60.0070.00717.04
7.2.50.0000.01117.27
7.2.40.0040.00917.27
7.2.30.0090.00617.24
7.2.20.0040.00817.30
7.2.10.0070.01017.31
7.2.00.0020.01018.52
7.1.330.0070.00716.04
7.1.320.0070.01016.02
7.1.310.0070.00715.98
7.1.300.0030.01015.67
7.1.290.0050.00516.10
7.1.280.0120.00316.18
7.1.270.0090.00016.03
7.1.260.0000.01416.09
7.1.250.0030.00616.07
7.1.240.0040.00715.93
7.1.230.0000.01415.80
7.1.220.0030.00716.17
7.1.210.0060.00915.94
7.1.200.0050.01116.05
7.1.190.0030.01215.82
7.1.180.0090.00316.15
7.1.170.0040.00816.09
7.1.160.0000.01215.91
7.1.150.0030.00615.96
7.1.140.0070.00716.02
7.1.130.0030.01216.05
7.1.120.0090.00316.03
7.1.110.0090.00616.03
7.1.100.0040.00717.13
7.1.90.0030.00815.85
7.1.80.0000.00915.97
7.1.70.0020.00816.79
7.1.60.0060.01417.55
7.1.50.0060.00716.41
7.1.40.0100.00716.13
7.1.30.0030.01015.97
7.1.20.0070.00716.10
7.1.10.0000.01115.74
7.1.00.0050.04219.28
7.0.330.0030.01215.74
7.0.320.0030.00615.66
7.0.310.0000.01215.81
7.0.300.0030.01015.87
7.0.290.0060.01015.55
7.0.280.0040.01115.73
7.0.270.0030.00815.56
7.0.260.0000.01215.55
7.0.250.0090.00315.69
7.0.240.0030.00915.83
7.0.230.0030.00915.84
7.0.220.0090.00615.39
7.0.210.0110.00315.69
7.0.200.0040.00816.37
7.0.190.0080.00415.59
7.0.180.0030.01015.41
7.0.170.0060.01015.80
7.0.160.0140.00015.85
7.0.150.0100.00315.71
7.0.140.0000.01315.70
7.0.130.0040.00715.79
7.0.120.0030.00715.57
7.0.110.0030.01315.83
7.0.100.0030.01015.86
7.0.90.0040.00815.60
7.0.80.0040.00715.73
7.0.70.0030.00815.80
7.0.60.0090.03917.90
7.0.50.0100.04016.86
7.0.40.0100.03716.93
7.0.30.0150.02916.92
7.0.20.0160.04517.04
7.0.10.0050.02917.05
7.0.00.0080.02016.93
5.6.400.0090.01222.77
5.6.390.0090.01222.26
5.6.380.0040.01222.25
5.6.370.0060.01222.25
5.6.360.0100.00722.38
5.6.350.0130.00722.67
5.6.340.0140.00322.84
5.6.330.0090.00622.49
5.6.320.0110.00922.72
5.6.310.0060.01022.39
5.6.300.0000.01822.72
5.6.290.0090.01322.58
5.6.280.0100.03825.79
5.6.270.0090.00922.66
5.6.260.0120.00622.54
5.6.250.0080.00822.26
5.6.240.0070.01522.59
5.6.230.0110.00722.46
5.6.220.0080.00822.64
5.6.210.0140.03725.54
5.6.200.0120.04724.14
5.6.190.0130.03725.38
5.6.180.1840.02425.42
5.6.170.0200.02425.51
5.6.160.0140.03125.41
5.6.150.0090.02124.37
5.6.140.0140.01924.43
5.6.130.0160.04024.38
5.6.120.0130.04125.75
5.6.110.0120.04525.77
5.6.100.0080.04525.75
5.6.90.0090.04725.74
5.6.80.0110.04325.33
5.6.70.2280.02425.37
5.6.60.0100.00722.27
5.6.50.0120.00622.68
5.6.40.0080.01122.46
5.6.30.0120.00622.52
5.6.20.0110.00622.41
5.6.10.0090.00922.29
5.6.00.0030.01322.36
5.5.380.0110.00722.11
5.5.370.0140.00322.35
5.5.360.0130.00722.39
5.5.350.0080.04325.38
5.5.340.0090.02624.23
5.5.330.0050.03025.35
5.5.320.0240.04025.20
5.5.310.0170.04225.26
5.5.300.0090.04424.08
5.5.290.0120.03524.33
5.5.280.0080.02725.37
5.5.270.0100.02525.64
5.5.260.0050.04225.75
5.5.250.0080.02325.66
5.5.240.0130.02625.20
5.5.230.0130.00422.39
5.5.220.0080.01122.60
5.5.210.0110.00622.40
5.5.200.0060.00922.39
5.5.190.0090.00622.25
5.5.180.0100.00722.25
5.5.170.0150.00622.25
5.5.160.0090.00622.46
5.5.150.0100.00722.18
5.5.140.0000.01722.55
5.5.130.0060.01022.53
5.5.120.0070.01022.11
5.5.110.0110.00722.35
5.5.100.0080.00822.45
5.5.90.0060.01122.26
5.5.80.0100.00722.25
5.5.70.0000.01722.58
5.5.60.0080.00822.54
5.5.50.0160.00622.41
5.5.40.0090.00622.20
5.5.30.0130.00322.39
5.5.20.0030.01422.55
5.5.10.0060.01222.67
5.5.00.0060.01122.37
5.4.450.0490.03322.98
5.4.440.0390.03723.16
5.4.430.0500.02523.04
5.4.420.0390.03523.31
5.4.410.0300.03723.02
5.4.400.0370.03022.70
5.4.390.0420.02523.01
5.4.380.0360.03122.92
5.4.370.0280.03922.81
5.4.360.0430.03222.96
5.4.350.0360.03722.86
5.4.340.0450.03423.06
5.4.330.0100.00418.89
5.4.320.0500.02822.72
5.4.310.0420.03222.82
5.4.300.0470.03022.83
5.4.290.0490.02522.91
5.4.280.0430.03522.84
5.4.270.0340.03322.87
5.4.260.0410.02522.79
5.4.250.0390.02922.83
5.4.240.0320.03722.96
5.4.230.0410.02722.82
5.4.220.0360.03322.93
5.4.210.0400.02623.00
5.4.200.0370.02822.96
5.4.190.0320.03323.00
5.4.180.0410.02622.98
5.4.170.0400.02922.96
5.4.160.0350.03022.92
5.4.150.0320.03322.97
5.4.140.0390.02621.52
5.4.130.0310.03221.56
5.4.120.0440.02921.54
5.4.110.0410.03121.65
5.4.100.0360.03021.51
5.4.90.0440.02721.57
5.4.80.0330.03120.85
5.4.70.0090.03020.85
5.4.60.0200.03920.94
5.4.50.0050.02020.79
5.4.40.0140.03420.82
5.4.30.0230.02320.84
5.4.20.0210.02320.80
5.4.10.0060.00618.38
5.4.00.0090.00918.43

preferences:
48.19 ms | 400 KiB | 5 Q