3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'things <b>that are bold </b>'; printf (preg_replace('/<\/?em>/', '', $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)
8.3.70.0060.01616.63
8.3.60.0070.00716.75
8.3.50.0100.00722.12
8.3.40.0110.00418.91
8.3.30.0140.00019.11
8.3.20.0040.00420.18
8.3.10.0000.00823.42
8.3.00.0050.00318.98
8.2.180.0120.00318.66
8.2.170.0120.00322.96
8.2.160.0100.00720.57
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0050.00226.16
8.2.120.0030.00520.79
8.2.110.0080.00022.07
8.2.100.0060.00617.78
8.2.90.0030.00619.09
8.2.80.0050.00317.97
8.2.70.0090.00017.75
8.2.60.0040.00418.04
8.2.50.0000.00818.07
8.2.40.0090.00020.07
8.2.30.0000.00718.07
8.2.20.0080.00017.76
8.2.10.0040.00418.07
8.2.00.0040.00717.75
8.1.280.0140.00325.92
8.1.270.0030.00523.83
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0110.00023.88
8.1.230.0080.00419.10
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0040.00417.23
8.1.180.0050.00318.10
8.1.170.0030.00618.73
8.1.160.0040.00421.88
8.1.150.0070.00018.72
8.1.140.0060.00617.53
8.1.130.0050.00317.84
8.1.120.0000.00717.58
8.1.110.0070.00017.48
8.1.100.0030.00517.42
8.1.90.0000.00817.43
8.1.80.0040.00417.50
8.1.70.0000.00717.54
8.1.60.0040.00417.63
8.1.50.0070.00017.60
8.1.40.0040.00417.54
8.1.30.0060.00317.62
8.1.20.0020.00517.74
8.1.10.0040.00417.62
8.1.00.0050.00317.50
8.0.300.0040.00418.77
8.0.290.0040.00417.18
8.0.280.0030.00318.38
8.0.270.0070.00017.11
8.0.260.0000.00617.20
8.0.250.0000.00816.93
8.0.240.0000.00717.05
8.0.230.0030.00317.02
8.0.220.0030.00316.86
8.0.210.0000.00717.00
8.0.200.0030.00316.93
8.0.190.0000.00817.01
8.0.180.0080.00017.00
8.0.170.0070.00016.88
8.0.160.0030.00516.83
8.0.150.0000.00716.80
8.0.140.0040.00416.94
8.0.130.0060.00013.42
8.0.120.0040.00416.89
8.0.110.0030.00316.97
8.0.100.0070.00016.95
8.0.90.0040.00416.92
8.0.80.0130.01016.91
8.0.70.0000.00816.86
8.0.60.0070.00016.85
8.0.50.0040.00416.77
8.0.30.0060.01216.99
8.0.20.0140.00517.42
8.0.10.0000.00717.10
8.0.00.0100.01216.89
7.4.330.0050.00015.05
7.4.320.0000.00616.63
7.4.300.0030.00316.63
7.4.290.0000.00816.66
7.4.280.0050.00316.77
7.4.270.0050.00316.54
7.4.260.0040.00416.63
7.4.250.0000.00716.59
7.4.240.0050.00216.61
7.4.230.0030.00316.52
7.4.220.0160.00816.79
7.4.210.0090.01016.64
7.4.200.0070.00016.82
7.4.190.0000.00716.68
7.4.160.0040.01316.49
7.4.150.0090.00917.40
7.4.140.0100.00817.86
7.4.130.0040.01316.57
7.4.120.0120.00916.56
7.4.110.0090.00916.65
7.4.100.0150.00316.51
7.4.90.0100.01016.58
7.4.80.0120.00619.39
7.4.70.0030.01316.48
7.4.60.0060.01616.38
7.4.50.0030.00316.57
7.4.40.0090.00816.47
7.4.30.0170.00616.38
7.4.00.0080.00414.73
7.3.330.0000.00513.00
7.3.320.0030.00312.96
7.3.310.0000.00716.14
7.3.300.0030.00316.19
7.3.290.0070.01216.29
7.3.280.0080.01016.23
7.3.270.0040.01217.40
7.3.260.0090.01016.34
7.3.250.0120.00916.50
7.3.240.0100.01316.32
7.3.230.0160.00616.39
7.3.210.0070.01016.40
7.3.200.0120.01019.39
7.3.190.0070.01016.58
7.3.180.0040.01116.54
7.3.170.0070.01016.27
7.3.160.0120.00316.28
7.3.120.0030.00914.75
7.2.330.0130.00316.67
7.2.320.0090.00916.52
7.2.310.0140.00416.52
7.2.300.0130.00316.55
7.2.290.0000.01816.50
7.2.00.0070.00719.07
7.1.100.0180.00917.86
7.1.70.0040.00417.03
7.1.60.0110.01419.46
7.1.50.0150.00917.05
7.1.00.0070.07322.34
7.0.200.0040.00416.85
7.0.140.0170.06022.12
7.0.60.0130.06320.00
7.0.50.0100.08017.91
7.0.40.0030.08720.18
7.0.30.0230.06320.02
7.0.20.0270.07720.11
7.0.10.0100.08020.18
7.0.00.0070.05720.17
5.6.280.0070.07021.11
5.6.210.0100.04020.43
5.6.200.0100.07718.16
5.6.190.0170.07720.43
5.6.180.0370.07320.79
5.6.170.0270.06020.54
5.6.160.0030.04320.54
5.6.150.0100.06018.09
5.6.140.0170.07318.11
5.6.130.0100.06318.21
5.6.120.0100.04020.93
5.6.110.0100.08320.93
5.6.100.0170.07720.88
5.6.90.0130.08021.02
5.6.80.0170.04720.52
5.5.350.0330.07020.27
5.5.340.0100.06317.98
5.5.330.0030.04320.40
5.5.320.0230.04720.41
5.5.310.0270.03020.41
5.5.300.0070.04317.91
5.5.290.0030.08717.97
5.5.280.0130.06020.76
5.5.270.0070.08320.65
5.5.260.0100.08320.79
5.5.250.0070.04020.77
5.5.240.0100.03320.34
5.4.450.0370.04319.26
5.4.440.0600.04719.41
5.4.430.0500.04319.42
5.4.420.0670.04019.45
5.4.410.0730.04318.99
5.4.400.0300.03319.18
5.4.390.0470.04318.89
5.4.380.0400.05718.74
5.4.370.0300.06718.59
5.4.360.0270.05318.71
5.4.350.0530.05318.61
5.4.340.0400.06318.68
5.4.320.0060.03512.45
5.4.310.0050.04212.45
5.4.300.0030.04012.45
5.4.290.0110.03312.45
5.4.280.0090.03312.34
5.4.270.0030.04012.35
5.4.260.0080.03712.35
5.4.250.0060.03912.34
5.4.240.0080.03712.34
5.4.230.0080.03612.34
5.4.220.0080.04912.34
5.4.210.0020.04312.34
5.4.200.0100.05212.34
5.4.190.0070.03812.33
5.4.180.0080.03612.34
5.4.170.0060.03512.34
5.4.160.0040.03812.34
5.4.150.0090.03512.34
5.4.140.0100.03512.02
5.4.130.0090.03612.01
5.4.120.0100.03511.97
5.4.110.0060.04211.96
5.4.100.0120.06211.96
5.4.90.0130.04811.96
5.4.80.0090.04711.96
5.4.70.0110.05511.96
5.4.60.0180.05411.96
5.4.50.0100.04511.96
5.4.40.0090.04111.95
5.4.30.0020.04111.95
5.4.20.0060.03511.95
5.4.10.0070.04011.95
5.4.00.0100.04411.44
5.3.290.0040.04412.80
5.3.280.0060.03912.71
5.3.270.0130.03612.73
5.3.260.0060.03912.72
5.3.250.0060.03712.72
5.3.240.0040.04112.72
5.3.230.0070.03912.71
5.3.220.0040.04012.68
5.3.210.0050.04112.68
5.3.200.0070.03712.68
5.3.190.0070.03812.68
5.3.180.0080.03612.68
5.3.170.0050.04112.67
5.3.160.0080.04112.68
5.3.150.0030.04212.68
5.3.140.0090.04612.66
5.3.130.0080.04712.66
5.3.120.0090.04812.66
5.3.110.0060.07412.65
5.3.100.0130.04112.12
5.3.90.0080.04010.21
5.3.80.0100.06012.07
5.3.70.0050.04012.07
5.3.60.0050.03812.06
5.3.50.0060.04212.00
5.3.40.0110.04612.00
5.3.30.0080.03611.95
5.3.20.0070.03511.73
5.3.10.0040.03811.70
5.3.00.0140.03811.69
5.2.170.0060.0299.19
5.2.160.0060.0309.19
5.2.150.0020.0329.19
5.2.140.0040.0309.18
5.2.130.0060.0299.14
5.2.120.0040.0389.14
5.2.110.0080.0279.16
5.2.100.0020.0319.14
5.2.90.0070.0289.14
5.2.80.0040.0319.14
5.2.70.0070.0279.14
5.2.60.0030.0319.09
5.2.50.0060.0289.06
5.2.40.0060.0279.05
5.2.30.0030.0329.03
5.2.20.0060.0299.01
5.2.10.0060.0298.92
5.2.00.0040.0398.77
5.1.60.0050.0248.06
5.1.50.0070.0328.05
5.1.40.0080.0538.04
5.1.30.0040.0458.39
5.1.20.0060.0468.41
5.1.10.0060.0368.14
5.1.00.0070.0358.13
5.0.50.0020.0316.61
5.0.40.0080.0296.47
5.0.30.0070.0356.29
5.0.20.0030.0226.25
5.0.10.0040.0216.23
5.0.00.0020.0326.23
4.4.90.0030.0154.78
4.4.80.0030.0154.75
4.4.70.0010.0204.76
4.4.60.0030.0184.75
4.4.50.0040.0284.77
4.4.40.0070.0344.71
4.4.30.0050.0224.76
4.4.20.0060.0284.84
4.4.10.0050.0244.84
4.4.00.0070.0334.76
4.3.110.0030.0264.67
4.3.100.0050.0404.67
4.3.90.0090.0294.64
4.3.80.0060.0364.58
4.3.70.0030.0244.63
4.3.60.0040.0164.63
4.3.50.0020.0194.63
4.3.40.0050.0244.53
4.3.30.0030.0183.28
4.3.20.0040.0163.25
4.3.10.0050.0183.22
4.3.00.0070.01316.12

preferences:
36.86 ms | 401 KiB | 5 Q