3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo mb_strlen("안녕", "latin1"); echo strlen("안녕"); echo utf8_encode("안녕");

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)
8.3.60.0100.00616.75
8.3.50.0210.00517.22
8.3.40.0170.00318.57
8.3.30.0120.00918.73
8.3.20.0050.00318.66
8.3.10.0040.00418.66
8.3.00.0050.00319.38
8.2.180.0110.00718.20
8.2.170.0040.01122.96
8.2.160.0090.00618.91
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0080.00019.77
8.2.110.0090.00022.36
8.2.100.0090.00318.16
8.2.90.0090.00017.88
8.2.80.0050.00318.74
8.2.70.0030.00617.63
8.2.60.0030.00617.93
8.2.50.0030.00518.07
8.2.40.0050.00319.48
8.2.30.0070.00317.84
8.2.20.0070.00417.58
8.2.10.0070.00017.80
8.2.00.0060.00617.78
8.1.280.0150.00325.92
8.1.270.0070.00023.99
8.1.260.0100.00726.35
8.1.250.0040.00428.09
8.1.240.0090.00020.65
8.1.230.0030.00917.83
8.1.220.0080.00017.88
8.1.210.0040.00418.77
8.1.200.0000.00917.35
8.1.190.0100.00317.36
8.1.180.0030.00818.10
8.1.170.0080.00018.90
8.1.160.0030.00319.10
8.1.150.0070.00318.53
8.1.140.0040.00417.50
8.1.130.0040.00419.23
8.1.120.0050.00317.44
8.1.110.0040.00417.45
8.1.100.0000.00717.46
8.1.90.0050.00317.46
8.1.80.0040.00417.48
8.1.70.0030.00317.41
8.1.60.0050.00217.61
8.1.50.0040.00417.43
8.1.40.0000.00717.56
8.1.30.0070.00417.54
8.1.20.0130.00317.68
8.1.10.0090.00017.65
8.1.00.0050.00217.63
8.0.300.0060.00318.77
8.0.290.0050.00216.75
8.0.280.0000.00818.53
8.0.270.0040.00417.32
8.0.260.0050.00216.92
8.0.250.0100.00016.90
8.0.240.0070.00016.91
8.0.230.0000.00816.94
8.0.220.0040.00416.84
8.0.210.0030.00316.75
8.0.200.0000.00716.76
8.0.190.0000.00716.85
8.0.180.0040.00416.94
8.0.170.0000.00816.76
8.0.160.0000.00716.92
8.0.150.0040.00416.78
8.0.140.0030.00516.84
8.0.130.0030.00313.25
8.0.120.0090.00016.85
8.0.110.0000.00816.75
8.0.100.0000.00716.87
8.0.90.0030.00316.87
8.0.80.0030.01316.84
8.0.70.0060.00316.99
8.0.60.0060.00316.79
8.0.50.0040.00416.70
8.0.30.0060.01617.03
8.0.20.0150.00317.02
8.0.10.0000.00816.98
8.0.00.0130.00616.63
7.4.330.0020.00212.89
7.4.320.0060.00016.45
7.4.300.0040.00416.52
7.4.290.0040.00816.43
7.4.280.0000.00716.34
7.4.270.0030.00316.51
7.4.260.0000.00513.18
7.4.250.0030.00516.47
7.4.240.0030.00316.51
7.4.230.0000.00716.59
7.4.220.0030.01416.40
7.4.210.0040.01116.61
7.4.200.0000.00816.55
7.4.190.0040.00416.67
7.4.160.0080.00816.32
7.4.150.0110.00616.63
7.4.140.0060.01217.86
7.4.130.0080.02316.30
7.4.120.0080.01116.51
7.4.110.0140.00416.36
7.4.100.0180.00016.49
7.4.90.0120.00616.54
7.4.80.0070.01019.39
7.4.70.0050.01116.42
7.4.60.0060.01016.50
7.4.50.0000.00516.42
7.4.40.0060.00916.49
7.4.30.0120.00616.72
7.4.00.0090.01215.12
7.3.330.0060.00013.12
7.3.320.0060.00013.07
7.3.310.0030.00316.18
7.3.300.0000.00716.20
7.3.290.0110.00616.15
7.3.280.0140.00716.18
7.3.270.0130.01016.40
7.3.260.0100.01316.30
7.3.240.0030.01416.18
7.3.230.0090.00916.37
7.3.210.0120.00616.36
7.3.200.0120.00816.27
7.3.190.0060.00916.25
7.3.180.0090.00916.29
7.3.170.0080.00816.29
7.3.160.0030.01216.33
7.3.120.0090.00315.09
7.3.10.0140.00416.09
7.3.00.0230.00016.05
7.2.330.0120.00916.46
7.2.320.0090.01016.49
7.2.310.0060.01616.49
7.2.300.0090.01216.50
7.2.290.0090.00616.23
7.2.130.0130.00316.47
7.2.120.0090.00916.80
7.2.110.0150.00316.64
7.2.100.0110.00416.58
7.2.90.0140.00516.69
7.2.80.0120.01016.45
7.2.70.0190.00316.52
7.2.60.0190.00916.47
7.2.50.0110.01416.77
7.2.40.0190.00716.50
7.2.30.0160.01116.44
7.2.20.0160.00616.58
7.2.10.0160.00816.41
7.2.00.0090.01018.08
7.1.250.0140.00315.55
7.1.200.0030.00615.70
7.1.70.0070.01016.96
7.1.60.0130.01019.25
7.1.50.0000.01516.91
7.1.00.0070.03022.39
7.0.200.0030.00716.79
7.0.140.0070.07022.08
7.0.120.0030.05322.07
7.0.60.0100.08020.03
7.0.50.0070.08017.77
7.0.40.0030.04720.04
7.0.30.0300.07720.13
7.0.20.0230.04720.09
7.0.10.0270.06020.12
7.0.00.0070.04020.04
5.6.280.0030.07321.03
5.6.210.0000.04320.73
5.6.200.0130.05318.12
5.6.190.0030.04320.41
5.6.180.0270.08320.65
5.6.170.0370.06720.42
5.6.160.0130.03320.51
5.6.150.0030.08018.19
5.6.140.0000.09018.18
5.6.130.0030.04018.11
5.6.120.0070.05721.14
5.6.110.0030.06020.88
5.6.100.0100.07321.13
5.6.90.0100.04721.09
5.6.80.0000.04720.41
5.6.70.4400.04320.49
5.5.350.0170.07720.44
5.5.340.0030.04017.91
5.5.330.0000.08720.47
5.5.320.0500.07020.47
5.5.310.0370.06320.21
5.5.300.0100.08018.01
5.5.290.0100.08317.87
5.5.280.0000.04720.77
5.5.270.0130.08020.96
5.5.260.0070.04020.75
5.5.250.0100.08020.68
5.5.240.0130.07020.15
5.4.450.0130.07319.41
5.4.440.0130.07319.44
5.4.430.0130.07019.40
5.4.420.0030.05019.14
5.4.410.0000.05719.28
5.4.400.0130.06019.09
5.4.390.0070.04719.08
5.4.380.0100.04019.16
5.4.370.0170.07019.18
5.4.360.0070.04018.79
5.4.350.0130.07019.05
5.4.340.0070.07719.18
5.4.320.0030.05718.92
5.4.310.0070.05319.16
5.4.300.0070.07319.19
5.4.290.0070.07718.93
5.4.280.0070.04719.00
5.4.270.0030.08018.78
5.4.260.0100.07018.80
5.4.250.0100.05318.90
5.4.240.0130.06718.80
5.4.230.0130.07019.02
5.4.220.0030.08718.80
5.4.210.0070.06018.91
5.4.200.0000.06019.14
5.4.190.0030.04318.81
5.4.180.0070.04319.13
5.4.170.0070.03719.14
5.4.160.0030.08319.05
5.4.150.0070.05718.89
5.4.140.0100.06716.27
5.4.130.0100.05016.25
5.4.120.0000.07716.43
5.4.110.0070.05316.27
5.4.100.0070.03716.40
5.4.90.0070.03316.30
5.4.80.0030.07316.30
5.4.70.0170.06716.14
5.4.60.0170.05716.25
5.4.50.0030.06016.30
5.4.40.0000.04316.32
5.4.30.0100.07016.33
5.4.20.0000.04016.57
5.4.10.0070.04016.39
5.4.00.0000.08015.94
5.3.290.0030.04714.45
5.3.280.0030.04014.53
5.3.270.0000.07714.53
5.3.260.0030.07314.54
5.3.250.0100.05014.53
5.3.240.0070.04714.52
5.3.230.0100.07014.52
5.3.220.0000.08314.48
5.3.210.0070.07714.50
5.3.200.0100.05314.50
5.3.190.0070.05014.37
5.3.180.0070.05014.50
5.3.170.0070.04714.50
5.3.160.0070.04714.50
5.3.150.0070.07714.49
5.3.140.0030.05014.49
5.3.130.0130.06014.46
5.3.120.0000.04314.47
5.3.110.0030.03714.36
5.3.100.0030.06013.98
5.3.90.0070.04713.94
5.3.80.0100.05713.83
5.3.70.0070.04313.83
5.3.60.0030.03713.95
5.3.50.0070.03313.75
5.3.40.0070.04713.87
5.3.30.0070.04313.69
5.3.20.0000.05313.64
5.3.10.0070.04713.60
5.3.00.0030.05713.72
5.2.170.0070.04011.01
5.2.160.0100.04711.03
5.2.150.0070.04011.02
5.2.140.0070.04711.07
5.2.130.0000.05711.11
5.2.120.0070.03010.92
5.2.110.0070.03010.98
5.2.100.0030.04311.06
5.2.90.0070.06311.25
5.2.80.0070.05711.09
5.2.70.0070.06311.07
5.2.60.0070.03010.97
5.2.50.0030.05011.09
5.2.40.0070.06011.07
5.2.30.0030.04010.86
5.2.20.0030.05310.90
5.2.10.0070.04010.89
5.2.00.0030.03010.78
5.1.60.0070.0509.94
5.1.50.0000.04710.05
5.1.40.0030.0409.92
5.1.30.0130.03310.25
5.1.20.0070.04310.35
5.1.10.0070.05710.07
5.1.00.0130.0309.96
5.0.50.0070.0178.49
5.0.40.0000.0308.36
5.0.30.0070.0408.11
5.0.20.0030.0338.26
5.0.10.0030.0378.30
5.0.00.0030.0438.14
4.4.90.0000.0237.91
4.4.80.0000.0337.91
4.4.70.0030.0177.91
4.4.60.0000.0377.91
4.4.50.0070.0207.91
4.4.40.0100.0377.91
4.4.30.0100.0307.91
4.4.20.0000.0337.91
4.4.10.0000.0237.91
4.4.00.0000.0437.91
4.3.110.0000.0207.91
4.3.100.0000.0307.91
4.3.90.0000.0407.91
4.3.80.0000.0437.91
4.3.70.0070.0337.91
4.3.60.0000.0377.91
4.3.50.0070.0137.91
4.3.40.0100.0437.91
4.3.30.0000.0237.91
4.3.20.0000.0177.91
4.3.10.0030.0137.91
4.3.00.0000.0177.91

preferences:
74.25 ms | 400 KiB | 5 Q