3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'foo o a a'; $str = preg_replace('/\s\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)
8.3.70.0070.01118.30
8.3.60.0100.01016.74
8.3.50.0090.01022.02
8.3.40.0130.00918.84
8.3.30.0030.01019.04
8.3.20.0050.00320.19
8.3.10.0040.00421.83
8.3.00.0000.00819.63
8.2.190.0070.01018.67
8.2.180.0070.01118.41
8.2.170.0120.00622.96
8.2.160.0070.00720.48
8.2.150.0130.00624.18
8.2.140.0040.00424.66
8.2.130.0030.00526.16
8.2.120.0000.00819.61
8.2.110.0060.01322.11
8.2.100.0090.00318.22
8.2.90.0050.00319.23
8.2.80.0040.00417.97
8.2.70.0060.00317.75
8.2.60.0050.00317.80
8.2.50.0040.00418.07
8.2.40.0030.00618.16
8.2.30.0050.00318.14
8.2.20.0000.00817.85
8.2.10.0040.00418.02
8.2.00.0040.00417.81
8.1.280.0090.01225.92
8.1.270.0040.00420.22
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0030.00622.05
8.1.230.0060.00617.64
8.1.220.0000.00817.77
8.1.210.0040.00418.77
8.1.200.0030.00617.25
8.1.190.0050.00517.25
8.1.180.0050.00318.10
8.1.170.0030.00618.65
8.1.160.0040.00418.85
8.1.150.0020.00518.76
8.1.140.0040.00417.41
8.1.130.0040.00417.86
8.1.120.0040.00417.46
8.1.110.0040.00417.52
8.1.100.0030.00417.52
8.1.90.0020.00517.53
8.1.80.0000.00817.48
8.1.70.0000.00717.55
8.1.60.0000.00917.70
8.1.50.0040.00417.60
8.1.40.0000.00717.59
8.1.30.0080.00017.73
8.1.20.0040.00417.61
8.1.10.0050.00217.53
8.1.00.0030.00517.56
8.0.300.0000.00718.77
8.0.290.0050.00316.75
8.0.280.0050.00318.46
8.0.270.0030.00317.27
8.0.260.0060.00018.46
8.0.250.0030.00317.00
8.0.240.0050.00316.97
8.0.230.0070.00016.98
8.0.220.0030.00316.84
8.0.210.0030.00516.95
8.0.200.0000.00617.07
8.0.190.0000.00716.99
8.0.180.0000.00716.90
8.0.170.0040.00416.86
8.0.160.0040.00416.95
8.0.150.0030.00516.81
8.0.140.0070.00016.80
8.0.130.0050.00013.36
8.0.120.0040.00416.90
8.0.110.0030.00516.89
8.0.100.0070.00016.86
8.0.90.0070.00016.86
8.0.80.0110.01116.92
8.0.70.0040.00416.88
8.0.60.0070.00016.82
8.0.50.0070.00016.91
8.0.30.0080.01317.26
8.0.20.0100.01317.41
8.0.10.0000.00717.08
8.0.00.0070.01116.78
7.4.330.0000.00715.03
7.4.320.0000.00616.71
7.4.300.0030.00616.76
7.4.290.0050.00516.62
7.4.280.0040.00916.74
7.4.270.0030.00616.72
7.4.260.0000.00816.76
7.4.250.0000.00716.60
7.4.240.0020.00516.70
7.4.230.0050.00216.49
7.4.220.0060.01216.75
7.4.210.0080.00616.61
7.4.200.0000.00716.59
7.4.160.0000.01416.60
7.4.150.0090.01617.40
7.4.140.0100.01417.86
7.4.130.0070.01016.67
7.4.120.0100.01016.62
7.4.110.0090.00916.64
7.4.100.0090.00916.65
7.4.90.0120.00616.70
7.4.80.0100.01319.39
7.4.70.0090.00916.71
7.4.60.0060.00916.81
7.4.50.0030.00516.57
7.4.40.0150.00916.48
7.4.30.0030.01316.54
7.4.00.0030.01414.98
7.3.330.0000.00813.18
7.3.320.0070.00713.28
7.3.310.0030.00316.16
7.3.300.0000.00716.39
7.3.290.0130.00616.37
7.3.280.0090.00816.37
7.3.270.0040.01517.40
7.3.260.0030.01716.74
7.3.250.0050.01316.65
7.3.240.0100.00716.76
7.3.230.0140.00916.39
7.3.210.0130.00716.51
7.3.200.0100.00619.39
7.3.190.0080.00816.57
7.3.180.0030.01316.55
7.3.170.0120.00816.66
7.3.160.0060.01016.47
7.2.330.0100.00716.70
7.2.320.0120.00616.64
7.2.310.0060.00916.75
7.2.300.0100.00716.65
7.2.290.0060.01116.58
7.2.00.0030.01319.59
7.1.200.0030.00915.73
7.1.100.0120.00817.84
7.1.70.0120.00317.35
7.1.60.0140.01019.50
7.1.50.0100.01317.01
7.1.00.0070.07322.46
7.0.200.0060.00615.08
7.0.140.0070.05021.91
7.0.60.0070.03719.99
7.0.50.0030.04317.68
7.0.40.0100.04320.32
7.0.30.0200.06020.02
7.0.20.0200.08720.14
7.0.10.0300.04720.18
7.0.00.0100.08720.22
5.6.280.0100.06720.90
5.6.210.0170.07320.52
5.6.200.0130.07718.15
5.6.190.0030.06720.41
5.6.180.0370.03720.35
5.6.170.0470.06720.48
5.6.160.0130.08020.52
5.6.150.0070.04318.17
5.6.140.0070.08718.12
5.6.130.0030.04318.16
5.6.120.0070.03720.99
5.6.110.0070.06020.98
5.6.100.0070.07321.01
5.6.90.0130.06021.01
5.6.80.0070.03720.48
5.6.70.0300.06720.35
5.5.350.0330.06320.34
5.5.340.0070.03718.02
5.5.330.0070.04020.19
5.5.320.0070.08020.40
5.5.310.0400.07720.34
5.5.300.0030.03717.98
5.5.290.0070.08017.91
5.5.280.0100.04720.89
5.5.270.0100.08720.75
5.5.260.0100.08720.72
5.5.250.0170.07020.61
5.5.240.0000.08020.24
5.4.450.0330.05319.48
5.4.440.1000.06019.22
5.4.430.1200.07019.39
5.4.420.0830.06019.57
5.4.410.0100.06018.97
5.4.400.1170.06018.60
5.4.390.1070.05718.67
5.4.380.1200.06718.64
5.4.370.1330.06018.64
5.4.360.0970.05718.77
5.4.350.1170.05018.67
5.4.340.1000.06318.43
5.4.320.1000.06718.73
5.4.310.1200.04718.58
5.4.300.1170.06718.71
5.4.290.1430.07318.74
5.4.280.1200.05718.47
5.4.270.1170.08318.55
5.4.260.1270.06318.64
5.4.250.1400.06018.74
5.4.240.1200.06018.47
5.4.230.1330.09018.61
5.4.220.1100.06718.75
5.4.210.1070.05718.70
5.4.200.1470.05316.41
5.4.190.1430.06718.66
5.4.180.1470.07018.55
5.4.170.1070.05718.47
5.4.160.0530.05318.41
5.4.150.0200.05718.74
5.4.140.0170.06716.23
5.4.130.0200.04016.13
5.4.120.1030.05316.04
5.4.110.1430.06016.16
5.4.100.1200.06016.04
5.4.90.1470.06016.14
5.4.80.1100.05716.06
5.4.70.1270.04316.09
5.4.60.1170.05716.18
5.4.50.1130.05316.28
5.4.40.1200.04716.23
5.4.30.1230.04316.03
5.4.20.1230.05716.11
5.4.10.1400.05016.22
5.4.00.1200.03715.60
5.3.290.1000.06714.71
5.3.280.1130.05314.66
5.3.270.1170.06014.55
5.3.260.1200.06314.66
5.3.250.1000.07314.51
5.3.240.1030.06014.63
5.3.230.1070.05314.57
5.3.220.1030.05314.51
5.3.210.1200.04314.55
5.3.200.1000.05714.54
5.3.190.1100.04714.54
5.3.180.1200.04314.71
5.3.170.1100.04714.64
5.3.160.1030.05014.54
5.3.150.1070.04714.49
5.3.140.0900.05714.50
5.3.130.1130.06714.59
5.3.120.1100.04714.57
5.3.110.1130.04714.46
5.3.100.1200.05714.11
5.3.90.1370.04314.01
5.3.80.1200.05313.99
5.3.70.1030.04714.06
5.3.60.1070.05313.96
5.3.50.1170.06013.92
5.3.40.4130.05313.95
5.3.30.1000.06013.90
5.3.20.1000.05313.78
5.3.10.5030.04013.75
5.3.00.1030.05313.61
5.2.170.0900.06711.18
5.2.160.0730.06011.13
5.2.150.1000.03711.20
5.2.140.5470.05311.13
5.2.130.0930.04011.16
5.2.120.4700.04311.09
5.2.110.0970.04311.07
5.2.100.0830.05311.07
5.2.90.4570.05011.16
5.2.80.1000.04011.31
5.2.70.0930.05011.15
5.2.60.1000.05310.99
5.2.50.1170.04011.07
5.2.40.0800.04311.21
5.2.30.2330.04310.96
5.2.20.1300.04310.99
5.2.10.0870.04010.88
5.2.00.0800.03710.77
5.1.60.0900.03710.11
5.1.50.0870.04710.02
5.1.40.0900.0479.94
5.1.30.0770.03310.36
5.1.20.0870.05010.41
5.1.10.0830.04010.09
5.1.00.0700.04010.09
5.0.50.0400.0278.65
5.0.40.0430.0278.52
5.0.30.0430.0508.25
5.0.20.0400.0278.32
5.0.10.0370.0308.20
5.0.00.0400.0478.14
4.4.90.0330.0275.87
4.4.80.0330.0205.91
4.4.70.0330.0205.86
4.4.60.0400.0235.81
4.4.50.0400.0275.87
4.4.40.0330.0405.86
4.4.30.0400.0235.91
4.4.20.0370.0335.97
4.4.10.0430.0205.96
4.4.00.0370.0335.89
4.3.110.0330.0275.83
4.3.100.0270.0235.84
4.3.90.0330.0205.83
4.3.80.0300.0435.84
4.3.70.0270.0235.84
4.3.60.0300.0275.77
4.3.50.0430.0275.87
4.3.40.0470.0435.80
4.3.30.0230.0274.54
4.3.20.0230.0174.61
4.3.10.0170.0204.59
4.3.00.0100.0236.76

preferences:
75.47 ms | 401 KiB | 5 Q