3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'foo o a a'; $str = preg_replace('/\s\s+/g', ' ', $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)
8.3.60.0170.00318.56
8.3.50.0000.01518.32
8.3.40.0120.00918.85
8.3.30.0100.00319.27
8.3.20.0040.00420.24
8.3.10.0040.00421.71
8.3.00.0030.00519.38
8.2.180.0140.00418.29
8.2.170.0070.00722.96
8.2.160.0140.00320.33
8.2.150.0070.01124.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00419.48
8.2.110.0140.00320.94
8.2.100.0040.00817.75
8.2.90.0030.00519.08
8.2.80.0080.00017.97
8.2.70.0030.00617.50
8.2.60.0000.00817.80
8.2.50.0000.00818.07
8.2.40.0040.00419.89
8.2.30.0040.00418.03
8.2.20.0080.00017.67
8.2.10.0040.00418.16
8.2.00.0040.00417.62
8.1.270.0030.00620.38
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0090.00023.84
8.1.230.0000.01117.64
8.1.220.0040.00417.79
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0060.00317.10
8.1.180.0030.00518.10
8.1.170.0040.00420.34
8.1.160.0000.00821.85
8.1.150.0040.00418.77
8.1.140.0050.00317.38
8.1.130.0000.00817.75
8.1.120.0040.00417.48
8.1.110.0000.00817.29
8.1.100.0050.00317.45
8.1.90.0040.00417.41
8.1.80.0040.00417.39
8.1.70.0000.00717.23
8.1.60.0030.00617.55
8.1.50.0040.00417.47
8.1.40.0060.00317.39
8.1.30.0000.00817.54
8.1.20.0040.00417.65
8.1.10.0000.00717.38
8.1.00.0000.00817.36
8.0.300.0030.00618.77
8.0.290.0060.00316.88
8.0.280.0000.00718.50
8.0.270.0000.00717.13
8.0.260.0060.00017.18
8.0.250.0030.00317.00
8.0.240.0000.00717.02
8.0.230.0000.00716.96
8.0.220.0000.00816.79
8.0.210.0070.00016.89
8.0.200.0060.00016.95
8.0.190.0050.00216.93
8.0.180.0040.00316.95
8.0.170.0000.00716.80
8.0.160.0040.00416.95
8.0.150.0000.00816.88
8.0.140.0030.00316.80
8.0.130.0030.00313.28
8.0.120.0040.00416.73
8.0.110.0000.00716.88
8.0.100.0030.00516.84
8.0.90.0030.00416.75
8.0.80.0060.01616.84
8.0.70.0040.00416.84
8.0.60.0050.00216.93
8.0.50.0080.00017.00
8.0.30.0110.01117.07
8.0.20.0160.00217.40
8.0.10.0070.00017.00
8.0.00.0110.00916.65
7.4.330.0040.00415.03
7.4.320.0000.00616.52
7.4.300.0100.00016.33
7.4.290.0000.00916.36
7.4.280.0160.00016.41
7.4.270.0040.00416.43
7.4.260.0030.00316.41
7.4.250.0050.00216.48
7.4.240.0060.00116.51
7.4.230.0070.00016.54
7.4.220.0090.00916.47
7.4.210.0040.01116.51
7.4.200.0000.00716.65
7.4.160.0100.00316.54
7.4.150.0150.00917.40
7.4.140.0080.01317.86
7.4.130.0070.01016.41
7.4.120.0140.00316.47
7.4.110.0090.00916.48
7.4.100.0160.00316.43
7.4.90.0110.01216.46
7.4.80.0170.00819.39
7.4.70.0030.01316.59
7.4.60.0120.00916.36
7.4.50.0030.00616.59
7.4.40.0070.01016.39
7.4.30.0060.01016.58
7.4.00.0030.01215.09
7.3.330.0060.00013.15
7.3.320.0060.00613.15
7.3.310.0000.00716.37
7.3.300.0000.00616.31
7.3.290.0110.00716.27
7.3.280.0070.00716.30
7.3.270.0130.00317.40
7.3.260.0160.00816.55
7.3.250.0110.00716.32
7.3.240.0070.01016.25
7.3.230.0120.01216.39
7.3.210.0150.00316.22
7.3.200.0100.00716.29
7.3.190.0060.00916.53
7.3.180.0130.00316.21
7.3.170.0000.01816.27
7.3.160.0100.00716.21
7.3.10.0090.00316.57
7.3.00.0040.00816.50
7.2.330.0110.00616.40
7.2.320.0060.01016.42
7.2.310.0030.01216.32
7.2.300.0140.00316.65
7.2.290.0080.01016.58
7.2.130.0080.00416.65
7.2.120.0090.00016.86
7.2.110.0030.00716.98
7.2.100.0030.00716.57
7.2.90.0000.01116.93
7.2.80.0040.00716.68
7.2.70.0090.00616.75
7.2.60.0030.01016.69
7.2.50.0060.00616.82
7.2.40.0000.01216.99
7.2.30.0030.00916.85
7.2.20.0000.01216.84
7.2.10.0090.00616.79
7.2.00.0080.00718.07
7.1.250.0060.00615.61
7.1.100.0110.00818.16
7.1.70.0050.00317.15
7.1.60.0070.01819.50
7.1.50.0070.01716.64
7.1.00.0030.07722.37
7.0.200.0110.00314.87
7.0.140.0070.04322.05
7.0.60.0130.08020.00
7.0.50.0070.07717.89
7.0.40.0030.05020.05
7.0.30.0430.05720.13
7.0.20.0230.04320.13
7.0.10.0030.05020.19
7.0.00.0000.04720.20
5.6.280.0000.07721.11
5.6.210.0130.08020.56
5.6.200.0070.07718.09
5.6.190.0070.08320.35
5.6.180.0370.07320.27
5.6.170.0130.06020.48
5.6.160.0000.04720.38
5.6.150.0030.04318.08
5.6.140.0030.06018.15
5.6.130.0000.06718.18
5.6.120.0070.08020.97
5.6.110.0170.07720.99
5.6.100.0130.06720.99
5.6.90.0070.08720.97
5.6.80.0130.07720.39
5.6.70.4170.04020.24
5.5.350.0070.05720.45
5.5.340.0100.08017.89
5.5.330.0100.03720.43
5.5.320.0370.07720.41
5.5.310.0170.08320.20
5.5.300.0100.07717.98
5.5.290.0100.05018.01
5.5.280.0070.05020.86
5.5.270.0130.05320.86
5.5.260.0170.06720.86
5.5.250.0000.04320.70
5.5.240.0130.03020.11
5.4.450.0430.04019.49
5.4.440.0970.05019.27
5.4.430.0870.06019.29
5.4.420.0500.05319.50
5.4.410.0070.06018.84
5.4.400.1030.05718.75
5.4.390.1130.07018.72
5.4.380.1270.06318.64
5.4.370.1070.06018.43
5.4.360.1100.05018.47
5.4.350.1270.06018.48
5.4.340.1000.05718.43
5.4.320.1000.06318.71
5.4.310.1000.05718.48
5.4.300.1100.06018.49
5.4.290.3270.06318.63
5.4.280.1270.05018.47
5.4.270.1170.05318.46
5.4.260.1130.07018.73
5.4.250.1000.06018.77
5.4.240.0970.06018.77
5.4.230.1070.06018.75
5.4.220.3270.05318.64
5.4.210.1100.05018.62
5.4.200.1070.07716.50
5.4.190.1130.06718.59
5.4.180.1200.05318.53
5.4.170.1430.06318.66
5.4.160.3700.05018.50
5.4.150.1230.06318.69
5.4.140.1030.05316.38
5.4.130.1130.05316.04
5.4.120.1270.05016.30
5.4.110.1230.06016.35
5.4.100.1300.07016.20
5.4.90.1170.06716.30
5.4.80.3730.05716.14
5.4.70.1170.07016.23
5.4.60.1170.05316.29
5.4.50.1230.05316.22
5.4.40.1370.05316.12
5.4.30.1130.05016.18
5.4.20.3870.06316.03
5.4.10.1100.05716.03
5.4.00.1070.06015.60
5.3.290.1170.06314.64
5.3.280.1070.06014.52
5.3.270.1270.05014.59
5.3.260.1100.06314.52
5.3.250.3100.05014.57
5.3.240.1070.05014.59
5.3.230.0900.06314.49
5.3.220.0930.05014.66
5.3.210.1070.06314.46
5.3.200.2500.06014.66
5.3.190.1200.05014.47
5.3.180.1200.05014.45
5.3.170.2470.06014.49
5.3.160.1070.04314.63
5.3.150.1100.04714.53
5.3.140.1000.05314.46
5.3.130.0930.05714.43
5.3.120.1070.05314.49
5.3.110.1070.06014.59
5.3.100.1070.06014.11
5.3.90.1130.05014.00
5.3.80.0870.05713.92
5.3.70.0270.05714.00
5.3.60.0070.06013.96
5.3.50.2130.05313.89
5.3.40.0470.05014.04
5.3.30.1170.04713.98
5.3.20.1400.06013.62
5.3.10.1230.05013.74
5.3.00.1030.06313.57
5.2.170.0900.04311.18
5.2.160.0770.05311.14
5.2.150.0930.05011.06
5.2.140.1000.04011.17
5.2.130.0900.04011.03
5.2.120.1000.06011.03
5.2.110.1030.04311.03
5.2.100.1070.04311.06
5.2.90.2500.04311.18
5.2.80.1100.04311.09
5.2.70.1130.05311.02
5.2.60.1030.04311.10
5.2.50.0970.06011.02
5.2.40.0830.04311.16
5.2.30.0830.03711.12
5.2.20.0900.04711.07
5.2.10.0670.04710.85
5.2.00.0730.04310.80
5.1.60.0770.04310.00
5.1.50.0800.04010.02
5.1.40.1000.0279.97
5.1.30.0730.03010.38
5.1.20.0630.04010.32
5.1.10.0730.03710.22
5.1.00.0730.03310.10
5.0.50.0430.0308.60
5.0.40.0470.0308.40
5.0.30.0400.0438.29
5.0.20.0400.0278.37
5.0.10.0400.0308.29
5.0.00.0430.0408.19
4.4.90.2000.0235.89
4.4.80.0330.0235.92
4.4.70.0230.0275.80
4.4.60.0400.0235.93
4.4.50.0400.0335.91
4.4.40.0530.0305.86
4.4.30.0300.0275.86
4.4.20.0370.0275.91
4.4.10.0370.0235.93
4.4.00.0430.0405.92
4.3.110.0400.0205.86
4.3.100.2200.0235.84
4.3.90.0400.0235.77
4.3.80.0270.0405.86
4.3.70.0300.0275.82
4.3.60.0330.0235.78
4.3.50.0400.0275.87
4.3.40.0400.0335.76
4.3.30.0170.0204.64
4.3.20.0200.0204.52
4.3.10.0100.0274.59
4.3.00.0170.0206.76

preferences:
113.55 ms | 400 KiB | 5 Q