3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'foo o a a'; $str = preg_replace('/\s/', '', $str); // This will be 'foo o' now echo $str;

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)
8.3.60.0120.00916.63
8.3.50.0130.00521.99
8.3.40.0120.00318.96
8.3.30.0070.00719.05
8.3.20.0080.00020.39
8.3.10.0040.00421.61
8.3.00.0050.00319.38
8.2.180.0110.00418.41
8.2.170.0070.00722.96
8.2.160.0160.00320.58
8.2.150.0140.00424.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0080.00019.48
8.2.110.0070.00419.06
8.2.100.0060.00617.75
8.2.90.0050.00319.23
8.2.80.0040.00417.97
8.2.70.0080.00017.88
8.2.60.0000.00818.05
8.2.50.0000.00818.07
8.2.40.0040.00419.88
8.2.30.0040.00418.08
8.2.20.0000.00717.70
8.2.10.0080.00018.20
8.2.00.0040.00417.88
8.1.280.0110.00425.92
8.1.270.0000.00820.25
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0060.00322.14
8.1.230.0080.00317.75
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0060.00317.36
8.1.190.0000.00817.13
8.1.180.0000.00918.10
8.1.170.0090.00020.49
8.1.160.0000.00721.98
8.1.150.0050.00218.76
8.1.140.0000.00817.47
8.1.130.0030.00517.80
8.1.120.0000.00717.49
8.1.110.0030.00517.44
8.1.100.0000.00717.54
8.1.90.0040.00417.52
8.1.80.0000.00717.51
8.1.70.0000.00717.44
8.1.60.0030.00617.64
8.1.50.0040.00417.51
8.1.40.0080.00017.63
8.1.30.0040.00417.65
8.1.20.0000.00917.69
8.1.10.0000.00817.64
8.1.00.0030.00617.56
8.0.300.0070.00018.77
8.0.290.0070.00016.88
8.0.280.0030.00318.50
8.0.270.0040.00417.29
8.0.260.0030.00318.45
8.0.250.0030.00317.14
8.0.240.0000.00716.99
8.0.230.0000.00717.07
8.0.220.0030.00316.88
8.0.210.0030.00316.96
8.0.200.0030.00317.04
8.0.190.0060.00316.92
8.0.180.0000.00716.98
8.0.170.0040.00416.99
8.0.160.0030.00517.02
8.0.150.0080.00016.97
8.0.140.0040.00416.96
8.0.130.0060.00013.43
8.0.120.0080.00016.93
8.0.110.0040.00416.90
8.0.100.0030.00316.92
8.0.90.0000.00717.02
8.0.80.0120.00916.96
8.0.70.0040.00416.96
8.0.60.0020.00516.93
8.0.50.0040.00416.99
8.0.30.0090.01017.33
8.0.20.0120.00717.40
8.0.10.0040.00417.16
8.0.00.0120.00916.93
7.4.330.0030.00315.03
7.4.320.0030.00316.73
7.4.300.0030.00616.75
7.4.290.0060.00616.56
7.4.280.0140.00316.50
7.4.270.0070.00016.73
7.4.260.0070.00016.75
7.4.250.0000.00716.69
7.4.240.0000.00716.70
7.4.230.0040.00416.77
7.4.220.0100.01016.77
7.4.210.0070.00716.69
7.4.200.0000.00716.75
7.4.160.0090.00916.71
7.4.150.0000.01717.40
7.4.140.0110.01417.86
7.4.130.0080.01516.66
7.4.120.0140.00616.58
7.4.110.0090.00916.70
7.4.100.0110.00616.64
7.4.90.0100.00716.75
7.4.80.0000.02319.39
7.4.70.0090.00616.59
7.4.60.0140.00316.47
7.4.50.0000.00816.43
7.4.40.0100.01316.71
7.4.30.0040.01416.63
7.4.00.0040.01115.07
7.3.330.0030.00313.22
7.3.320.0090.00313.22
7.3.310.0070.00016.43
7.3.300.0000.00616.38
7.3.290.0080.00916.35
7.3.280.0060.00816.33
7.3.270.0150.00317.40
7.3.260.0040.01616.32
7.3.250.0120.00816.54
7.3.240.0060.01216.43
7.3.230.0060.01516.55
7.3.210.0100.00716.79
7.3.200.0130.00719.39
7.3.190.0070.01016.36
7.3.180.0160.00016.33
7.3.170.0070.01016.29
7.3.160.0090.00916.43
7.3.10.0020.00816.47
7.3.00.0050.00716.54
7.2.330.0150.00316.79
7.2.320.0030.01516.82
7.2.310.0100.00616.68
7.2.300.0060.00916.66
7.2.290.0170.00616.60
7.2.130.0090.00516.92
7.2.120.0110.00117.12
7.2.110.0030.00916.98
7.2.100.0030.01217.11
7.2.90.0050.00817.04
7.2.80.0100.00416.97
7.2.70.0050.00717.03
7.2.60.0030.00916.94
7.2.50.0070.00717.13
7.2.40.0080.00717.09
7.2.30.0060.00716.86
7.2.20.0050.00817.12
7.2.10.0090.00316.98
7.2.00.0070.00617.77
7.1.250.0030.00615.89
7.1.100.0090.00918.24
7.1.70.0080.00017.40
7.1.60.0070.01819.50
7.1.50.0100.01617.04
7.1.00.0130.07022.32
7.0.200.0130.00715.12
7.0.140.0030.06322.16
7.0.60.0170.07021.83
7.0.50.0070.06317.86
7.0.40.0100.08719.92
7.0.30.0530.06019.98
7.0.20.0230.03720.21
7.0.10.0000.08020.16
7.0.00.0070.05020.13
5.6.280.0070.07021.08
5.6.210.0100.03320.60
5.6.200.0100.08318.15
5.6.190.0170.07320.57
5.6.180.0300.05020.60
5.6.170.0200.03720.40
5.6.160.0070.04720.46
5.6.150.0100.04718.09
5.6.140.0000.08018.11
5.6.130.0200.07018.10
5.6.120.0030.07321.11
5.6.110.0030.08720.98
5.6.100.0100.08320.98
5.6.90.0100.07720.96
5.6.80.0070.08020.37
5.5.350.0370.06720.32
5.5.340.0100.08017.99
5.5.330.0070.08320.21
5.5.320.0330.08720.24
5.5.310.0300.04720.17
5.5.300.0100.08017.98
5.5.290.0030.08317.95
5.5.280.0070.04020.72
5.5.270.0230.06720.86
5.5.260.0100.03720.87
5.5.250.0130.07720.70
5.5.240.0100.03320.35
5.4.450.0200.05319.41
5.4.440.0130.04319.37
5.4.430.0230.07019.45
5.4.420.0270.04019.45
5.4.410.0230.07019.29
5.4.400.0200.04718.95
5.4.390.0130.04018.89
5.4.380.0130.07019.09
5.4.370.0170.04018.91
5.4.360.0200.04719.13
5.4.350.0200.03718.78
5.4.340.0170.03719.13
5.4.320.0200.04318.78
5.4.310.0200.03319.24
5.4.300.0270.06319.06
5.4.290.0130.04018.88
5.4.280.0200.07019.09
5.4.270.0170.03718.93
5.4.260.0130.05019.21
5.4.250.0230.07318.80
5.4.240.0200.04719.14
5.4.230.0200.05719.08
5.4.220.0170.04018.77
5.4.210.0200.05319.08
5.4.200.0200.04019.09
5.4.190.0130.04718.93
5.4.180.0130.04318.91
5.4.170.0130.04318.89
5.4.160.0200.03318.91
5.4.150.0200.04019.04
5.4.140.0170.06716.29
5.4.130.0200.06016.17
5.4.120.0070.05316.26
5.4.110.0170.07316.30
5.4.100.0130.05016.39
5.4.90.0130.04016.50
5.4.80.0230.06316.40
5.4.70.0270.04716.38
5.4.60.0170.04716.16
5.4.50.0230.04016.40
5.4.40.0200.03716.04
5.4.30.0200.03016.36
5.4.20.0100.04016.27
5.4.10.0070.05016.31
5.4.00.0100.04315.77
5.3.290.0130.04014.52
5.3.280.0130.04014.43
5.3.270.0300.04014.51
5.3.260.0170.03714.64
5.3.250.0230.04714.54
5.3.240.0170.03714.56
5.3.230.0200.03314.47
5.3.220.0200.03714.41
5.3.210.0200.03314.50
5.3.200.0130.05014.65
5.3.190.0200.04314.61
5.3.180.0130.04314.51
5.3.170.0130.04014.46
5.3.160.0170.03314.41
5.3.150.0170.03714.38
5.3.140.0130.04314.49
5.3.130.0200.05014.39
5.3.120.0200.03314.38
5.3.110.0170.03714.49
5.3.100.0100.04313.99
5.3.90.0200.03013.85
5.3.80.0130.03714.03
5.3.70.0170.03314.00
5.3.60.0230.02713.88
5.3.50.0230.02714.04
5.3.40.0270.04313.79
5.3.30.0130.04013.84
5.3.20.0230.03013.63
5.3.10.0100.04013.51
5.3.00.0200.03013.41
5.2.170.0200.02311.00
5.2.160.0170.02311.03
5.2.150.0100.03011.15
5.2.140.0130.02710.98
5.2.130.0130.03711.14
5.2.120.0200.04710.95
5.2.110.0200.03310.95
5.2.100.0200.06010.96
5.2.90.0100.06710.94
5.2.80.0170.03311.10
5.2.70.0270.02710.93
5.2.60.0030.05711.08
5.2.50.0070.03710.85
5.2.40.0100.02710.84
5.2.30.0130.02710.83
5.2.20.0130.02710.89
5.2.10.0100.03310.87
5.2.00.0130.03710.79
5.1.60.0070.0279.96
5.1.50.0130.0209.96
5.1.40.0070.0309.91
5.1.30.0070.03010.24
5.1.20.0070.03010.36
5.1.10.0130.02310.04
5.1.00.0200.02710.04
5.0.50.0070.0238.44
5.0.40.0100.0338.28
5.0.30.0100.0308.19
5.0.20.0070.0208.42
5.0.10.0100.0208.11
5.0.00.0070.0308.10
4.4.90.0070.0177.72
4.4.80.0130.0137.72
4.4.70.0100.0107.72
4.4.60.0100.0137.72
4.4.50.0070.0207.72
4.4.40.0030.0537.72
4.4.30.0000.0307.72
4.4.20.0030.0177.72
4.4.10.0100.0307.72
4.4.00.0100.0377.72
4.3.110.0100.0177.72
4.3.100.0100.0307.72
4.3.90.0130.0307.72
4.3.80.0100.0407.72
4.3.70.0130.0307.72
4.3.60.0070.0137.72
4.3.50.0130.0307.72
4.3.40.0100.0277.72
4.3.30.0000.0207.72
4.3.20.0100.0137.72
4.3.10.0030.0137.72
4.3.00.0030.0337.72

preferences:
50.17 ms | 401 KiB | 5 Q