3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo '<pre>'; $a = ' \\'; echo $a.'<br>'; if (preg_match('%[\\\]{2}%i', $a, $regs)) { var_dump($regs); } else { echo 'Failed.'; }

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)
8.3.60.0110.00716.61
8.3.50.0100.00721.21
8.3.40.0150.00318.78
8.3.30.0070.00719.09
8.3.20.0040.00420.15
8.3.10.0040.00422.01
8.3.00.0040.00422.34
8.2.180.0160.00318.41
8.2.170.0180.00319.13
8.2.160.0070.01322.96
8.2.150.0090.00024.18
8.2.140.0080.00824.66
8.2.130.0100.00326.16
8.2.120.0080.00019.79
8.2.110.0050.00522.14
8.2.100.0120.00019.41
8.2.90.0080.00019.23
8.2.80.0070.00417.97
8.2.70.0060.00317.75
8.2.60.0000.00817.93
8.2.50.0080.00018.07
8.2.40.0000.00818.28
8.2.30.0000.00718.17
8.2.20.0040.00417.71
8.2.10.0000.00817.84
8.2.00.0030.00517.80
8.1.280.0090.00625.92
8.1.270.0030.00620.43
8.1.260.0000.00826.35
8.1.250.0030.00528.09
8.1.240.0040.00823.74
8.1.230.0030.00719.16
8.1.220.0090.00017.74
8.1.210.0040.00418.77
8.1.200.0070.00317.48
8.1.190.0050.00317.40
8.1.180.0030.00518.54
8.1.170.0040.00418.77
8.1.160.0030.00322.07
8.1.150.0050.00318.57
8.1.140.0000.00717.49
8.1.130.0030.00317.83
8.1.120.0000.00817.52
8.1.110.0040.00417.54
8.1.100.0000.00817.54
8.1.90.0040.00417.53
8.1.80.0070.00017.54
8.1.70.0070.00017.48
8.1.60.0080.00017.68
8.1.50.0050.00217.49
8.1.40.0050.00317.62
8.1.30.0040.00417.72
8.1.20.0060.00317.77
8.1.10.0000.00817.70
8.1.00.0030.00517.51
8.0.300.0070.00018.77
8.0.290.0040.00317.18
8.0.280.0080.00018.53
8.0.270.0000.00717.22
8.0.260.0030.00316.98
8.0.250.0030.00316.97
8.0.240.0030.00616.97
8.0.230.0000.00717.11
8.0.220.0070.00017.02
8.0.210.0000.00716.91
8.0.200.0030.00317.08
8.0.190.0040.00417.05
8.0.180.0040.00417.05
8.0.170.0070.00017.06
8.0.160.0080.00017.08
8.0.150.0070.00016.87
8.0.140.0040.00416.89
8.0.130.0000.00513.45
8.0.120.0030.00616.97
8.0.110.0080.00016.92
8.0.100.0040.00416.90
8.0.90.0000.00716.97
8.0.80.0060.00916.99
8.0.70.0070.00016.89
8.0.60.0040.00417.09
8.0.50.0040.00416.96
8.0.30.0080.01217.08
8.0.20.0100.00817.45
8.0.10.0030.00516.97
8.0.00.0080.01017.05
7.4.330.0030.00315.00
7.4.320.0060.00016.72
7.4.300.0040.00416.58
7.4.290.0000.00716.66
7.4.280.0080.00016.55
7.4.270.0070.00016.55
7.4.260.0000.00716.66
7.4.250.0040.00416.72
7.4.240.0040.00416.65
7.4.230.0070.00016.80
7.4.220.0120.00616.62
7.4.210.0120.00616.68
7.4.200.0000.00716.43
7.4.190.0070.00016.88
7.4.160.0040.01116.51
7.4.150.0130.00317.40
7.4.140.0100.00817.86
7.4.130.0100.00716.71
7.4.120.0090.01216.68
7.4.110.0190.00016.62
7.4.100.0030.01316.59
7.4.90.0000.01716.59
7.4.80.0070.01719.39
7.4.70.0140.00316.44
7.4.60.0060.01416.56
7.4.50.0060.00316.77
7.4.40.0070.00722.77
7.4.30.0120.00916.62
7.4.00.0120.00314.98
7.3.330.0030.00313.00
7.3.320.0050.00313.25
7.3.310.0050.00316.42
7.3.300.0000.00716.39
7.3.290.0070.00716.33
7.3.280.0090.00616.35
7.3.270.0040.01217.40
7.3.260.0090.00916.65
7.3.250.0120.00616.55
7.3.240.0140.00316.45
7.3.230.0100.01316.44
7.3.210.0090.00916.50
7.3.200.0090.01319.39
7.3.190.0050.01216.63
7.3.180.0120.00316.70
7.3.170.0140.00616.39
7.3.160.0060.01016.38
7.3.120.0090.00614.55
7.2.330.0090.00916.76
7.2.320.0140.00316.83
7.2.310.0110.00716.66
7.2.300.0030.01916.86
7.2.290.0110.01116.68
7.2.00.0100.00719.36
7.1.100.0000.01418.11
7.1.70.0040.00417.16
7.1.60.0110.01419.82
7.1.50.0030.00917.09
7.1.00.0000.07022.38
7.0.200.0000.00917.02
7.0.140.0030.07722.12
7.0.60.0070.08319.93
7.0.50.0070.07717.87
7.0.40.0070.06320.25
7.0.30.0200.05320.13
7.0.20.0200.03720.18
7.0.10.0100.04320.16
7.0.00.0170.07720.00
5.6.280.0000.07321.06
5.6.210.0000.04320.54
5.6.200.0100.03318.04
5.6.190.0070.06720.61
5.6.180.0230.07720.39
5.6.170.0300.07020.71
5.6.160.0030.05020.35
5.6.150.0130.07718.11
5.6.140.0070.06318.20
5.6.130.0070.06718.22
5.6.120.0030.05321.09
5.6.110.0000.04721.02
5.6.100.0070.04020.94
5.6.90.0130.05320.95
5.6.80.0230.06720.39
5.5.350.3870.04320.52
5.5.340.0030.04317.91
5.5.330.0070.08720.14
5.5.320.0270.07720.29
5.5.310.0270.07720.29
5.5.300.0100.08017.98
5.5.290.0030.08317.95
5.5.280.0030.04720.68
5.5.270.0100.05320.71
5.5.260.0130.08020.67
5.5.250.0070.07020.70
5.5.240.0100.08020.14
5.4.450.0300.06019.36
5.4.440.0400.04319.47
5.4.430.0400.04319.45
5.4.420.0400.05319.46
5.4.410.0500.07018.98
5.4.400.0530.06318.78
5.4.390.0430.05019.16
5.4.380.0530.05719.13
5.4.370.0500.04318.89
5.4.360.0370.04319.08
5.4.350.0430.07319.09
5.4.340.0470.06319.08
5.4.320.0500.06718.93
5.4.310.0670.05319.10
5.4.300.0530.06319.13
5.4.290.0530.05319.08
5.4.280.0530.06319.24
5.4.270.0470.05018.91
5.4.260.0670.03018.88
5.4.250.0430.04019.15
5.4.240.0500.06719.08
5.4.230.0500.06318.95
5.4.220.0500.06019.13
5.4.210.0470.07019.09
5.4.200.0500.06719.05
5.4.190.0530.06319.23
5.4.180.0530.05718.91
5.4.170.0570.05019.10
5.4.160.0470.06719.03
5.4.150.0470.05019.06
5.4.140.0570.06016.22
5.4.130.0430.04316.27
5.4.120.0400.03716.32
5.4.110.0330.04316.46
5.4.100.0330.04016.50
5.4.90.0370.04016.39
5.4.80.0430.06716.29
5.4.70.0470.04716.37
5.4.60.0530.05316.36
5.4.50.0630.05016.40
5.4.40.0570.05016.18
5.4.30.0600.03716.31
5.4.20.0500.06016.41
5.4.10.0370.04016.40
5.4.00.0300.04315.69
5.3.290.0330.04014.50
5.3.280.0370.03314.60
5.3.270.0330.03714.45
5.3.260.0400.04014.58
5.3.250.0400.03714.66
5.3.240.0300.04714.56
5.3.230.0370.03314.42
5.3.220.0300.04014.46
5.3.210.0270.04314.51
5.3.200.0370.03314.40
5.3.190.0370.03714.46
5.3.180.0370.03314.61
5.3.170.0500.03714.61
5.3.160.0330.03714.50
5.3.150.0400.04314.49
5.3.140.0400.03014.57
5.3.130.0330.04014.38
5.3.120.0400.03014.50
5.3.110.0370.03314.38
5.3.100.0400.03013.91
5.3.90.0370.03013.86
5.3.80.0300.03713.89
5.3.70.0400.03014.03
5.3.60.0300.03713.95
5.3.50.0300.04013.74
5.3.40.0330.04014.04
5.3.30.0400.02713.92
5.3.20.0400.04313.64
5.3.10.0370.03013.64
5.3.00.0300.03713.44
5.2.170.0370.03012.09
5.2.160.0230.03312.09
5.2.150.0300.02712.09
5.2.140.0400.03012.09
5.2.130.0270.03012.09
5.2.120.0270.03012.09
5.2.110.0370.02712.09
5.2.100.0270.03012.09
5.2.90.0300.02712.09
5.2.80.0300.02712.09
5.2.70.0300.03712.09
5.2.60.0330.02312.09
5.2.50.0330.02312.09
5.2.40.0270.02312.09
5.2.30.0170.03312.09
5.2.20.0200.03012.09
5.2.10.0230.02712.09
5.2.00.0200.03012.09
5.1.60.0300.01712.09
5.1.50.0200.02312.09
5.1.40.0270.02012.09
5.1.30.0230.03012.09
5.1.20.0230.02312.09
5.1.10.0300.01712.09
5.1.00.0300.01712.09
5.0.50.0100.02012.09
5.0.40.0270.03712.09
5.0.30.0200.03712.09
5.0.20.0130.04012.09
5.0.10.0100.02312.09
5.0.00.0100.03712.09
4.4.90.0130.02012.09
4.4.80.0100.01312.09
4.4.70.0130.03312.09
4.4.60.0170.03312.09
4.4.50.0200.02712.09
4.4.40.0170.03312.09
4.4.30.0200.03312.09
4.4.20.0130.02012.09
4.4.10.0170.03012.09
4.4.00.0170.03312.09
4.3.110.0130.03012.09
4.3.100.0200.03312.09
4.3.90.0170.01712.09
4.3.80.0200.05012.09
4.3.70.0170.03012.09
4.3.60.0170.02312.09
4.3.50.0170.03012.09
4.3.40.0370.01712.09
4.3.30.0100.03312.09
4.3.20.0100.02712.09
4.3.10.0100.03012.09
4.3.00.0100.02312.09

preferences:
42.45 ms | 401 KiB | 5 Q