3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "abcdefghijklmnopqrstuvwxyz"; echo strlen( $str ) !== mb_strlen( $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)
8.3.60.0180.00018.18
8.3.50.0140.00421.13
8.3.40.0120.00318.59
8.3.30.0070.00718.88
8.3.20.0040.00420.22
8.3.10.0040.00423.65
8.3.00.0000.00723.53
8.2.180.0120.00918.29
8.2.170.0100.01022.96
8.2.160.0070.00722.13
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0000.00719.95
8.2.110.0110.01120.87
8.2.100.0120.00017.63
8.2.90.0000.00819.05
8.2.80.0040.00417.97
8.2.70.0000.00917.63
8.2.60.0050.00217.91
8.2.50.0050.00318.07
8.2.40.0060.00321.17
8.2.30.0050.00318.15
8.2.20.0040.00417.72
8.2.10.0030.00617.90
8.2.00.0020.00517.89
8.1.280.0100.00725.92
8.1.270.0050.00320.20
8.1.260.0000.00726.35
8.1.250.0080.00028.09
8.1.240.0090.00022.65
8.1.230.0040.00717.48
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0050.00517.22
8.1.190.0000.00817.10
8.1.180.0040.00418.10
8.1.170.0000.00818.36
8.1.160.0030.00523.73
8.1.150.0070.00018.70
8.1.140.0000.00717.25
8.1.130.0030.00317.49
8.1.120.0050.00317.43
8.1.110.0030.00617.45
8.1.100.0000.00717.40
8.1.90.0040.00417.30
8.1.80.0030.00417.40
8.1.70.0070.00017.27
8.1.60.0000.00817.52
8.1.50.0000.00817.42
8.1.40.0000.00717.50
8.1.30.0000.00817.64
8.1.20.0000.00717.67
8.1.10.0040.00417.57
8.1.00.0020.00517.47
8.0.300.0000.00818.77
8.0.290.0030.00516.75
8.0.280.0030.00318.49
8.0.270.0030.00317.21
8.0.260.0030.00317.29
8.0.250.0000.00716.97
8.0.240.0000.00816.98
8.0.230.0070.00016.89
8.0.220.0060.00016.88
8.0.210.0070.00016.91
8.0.200.0060.00016.93
8.0.190.0000.00816.85
8.0.180.0000.00716.82
8.0.170.0000.00816.96
8.0.160.0000.00716.81
8.0.150.0070.00016.70
8.0.140.0040.00416.84
8.0.130.0030.00313.36
8.0.120.0000.00816.79
8.0.110.0000.00716.94
8.0.100.0000.00716.69
8.0.90.0040.00416.88
8.0.80.0090.00816.76
8.0.70.0070.00016.94
8.0.60.0050.00216.73
8.0.50.0000.00716.68
8.0.30.0120.00517.03
8.0.20.0150.00517.40
8.0.10.0000.00716.92
8.0.00.0060.01316.63
7.4.330.0030.00615.08
7.4.320.0030.00316.51
7.4.300.0000.00616.61
7.4.290.0040.00416.57
7.4.280.0040.00416.49
7.4.270.0000.00616.56
7.4.260.0000.00716.45
7.4.250.0000.00716.46
7.4.240.0030.00516.51
7.4.230.0030.00316.37
7.4.220.0190.00616.54
7.4.210.0060.00916.61
7.4.200.0070.00016.59
7.4.160.0090.00616.53
7.4.150.0120.00617.40
7.4.140.0110.00817.86
7.4.130.0090.00916.59
7.4.120.0150.00816.40
7.4.110.0070.01016.52
7.4.100.0170.00716.48
7.4.90.0040.01416.48
7.4.80.0060.01019.39
7.4.70.0100.00716.47
7.4.60.0100.00616.38
7.4.50.0040.00416.35
7.4.40.0030.01316.52
7.4.30.0130.01016.28
7.4.00.0050.00815.10
7.3.330.0050.00013.15
7.3.320.0000.00713.08
7.3.310.0040.00416.10
7.3.300.0060.00016.25
7.3.290.0090.00516.25
7.3.280.0130.00616.30
7.3.270.0100.00717.40
7.3.260.0080.00816.56
7.3.250.0130.00816.44
7.3.240.0090.00816.24
7.3.230.0140.00416.53
7.3.210.0160.00616.25
7.3.200.0070.01416.22
7.3.190.0070.01016.52
7.3.180.0050.01116.39
7.3.170.0110.00516.27
7.3.160.0070.01016.40
7.3.120.0000.01314.44
7.3.110.0040.01114.73
7.3.100.0100.00314.76
7.3.90.0000.01314.60
7.3.80.0030.01014.70
7.3.70.0070.00714.55
7.3.60.0030.00714.77
7.3.50.0090.00614.48
7.3.40.0070.00314.74
7.3.30.0040.00714.85
7.3.20.0060.00316.72
7.3.10.0100.00316.48
7.3.00.0070.00516.66
7.2.330.0090.00916.78
7.2.320.0110.00716.66
7.2.310.0100.00616.56
7.2.300.0090.00616.21
7.2.290.0060.01016.54
7.2.240.0070.00715.20
7.2.230.0000.01814.56
7.2.220.0000.01715.10
7.2.210.0040.00815.15
7.2.200.0030.00914.81
7.2.190.0090.00614.99
7.2.180.0130.00314.67
7.2.170.0100.00314.88
7.2.160.0070.00714.89
7.2.150.0120.00416.70
7.2.140.0060.00917.09
7.2.130.0050.00816.71
7.2.120.0030.01016.89
7.2.110.0030.01016.85
7.2.100.0010.01116.87
7.2.90.0050.01016.93
7.2.80.0060.00716.73
7.2.70.0890.01016.72
7.2.60.0070.00516.83
7.2.50.0060.00516.63
7.2.40.0050.01016.92
7.2.30.0090.00516.82
7.2.20.0090.00716.64
7.2.10.0080.00616.74
7.2.00.0110.00917.55
7.1.330.0040.01115.88
7.1.320.0100.00315.48
7.1.310.0060.00915.94
7.1.300.0030.01015.82
7.1.290.0030.00915.74
7.1.280.0030.01315.57
7.1.270.0090.00615.78
7.1.260.0040.01015.74
7.1.250.0050.00515.80
7.1.200.0030.00915.71
7.1.100.0410.00014.25
7.1.70.0000.01216.96
7.1.60.0070.01819.42
7.1.50.0070.01716.74
7.1.00.0030.07722.48
7.0.200.0070.00714.63
7.0.60.0070.04020.01
7.0.50.0100.07717.89
7.0.40.0030.08320.24
7.0.30.0430.04020.01
7.0.20.0200.03720.16
7.0.10.0130.08320.20
7.0.00.0000.04720.33
5.6.280.0030.05020.81
5.6.210.0030.04020.72
5.6.200.0130.06718.19
5.6.190.0070.05320.49
5.6.180.0230.05720.45
5.6.170.0230.05320.50
5.6.160.0070.05320.52
5.6.150.0100.08018.04
5.6.140.0070.05318.21
5.6.130.0030.04018.07
5.6.120.0130.08021.09
5.6.110.0030.08321.10
5.6.100.0030.04721.00
5.6.90.0200.06020.98
5.6.80.0130.06320.36
5.5.350.0030.08720.45
5.5.340.0070.06718.02
5.5.330.0170.08020.19
5.5.320.0030.04320.13
5.5.310.0370.04320.24
5.5.300.0070.05017.92
5.5.290.0030.04017.91
5.5.280.0130.07720.86
5.5.270.0070.08020.93
5.5.260.0070.08320.80
5.5.250.0070.06320.70
5.5.240.0000.08020.36
5.4.450.0800.05719.10
5.4.440.0070.09319.57
5.4.430.0170.06019.13
5.4.420.0570.05719.42
5.4.410.0770.05319.34
5.4.400.0770.06019.31
5.4.390.0700.06018.95
5.4.380.0700.06319.08
5.4.370.0770.08318.91
5.4.360.0670.05019.15
5.4.350.0730.07019.18
5.4.340.1000.04319.30
5.4.320.0430.04318.78
5.4.310.0000.06019.30
5.4.300.0100.05319.25
5.4.290.0130.05018.91
5.4.280.0800.05018.92
5.4.270.0730.05318.93
5.4.260.0730.05719.30
5.4.250.0730.05718.90
5.4.240.0700.05719.24
5.4.230.0800.05719.26
5.4.220.0770.06319.25
5.4.210.0770.06019.24
5.4.200.0670.05716.72
5.4.190.0900.03718.85
5.4.180.0770.05718.95
5.4.170.0830.04719.22
5.4.160.0700.06018.92
5.4.150.0770.05019.07
5.4.140.0670.05716.47
5.4.130.0830.04716.32
5.4.120.0630.05716.41
5.4.110.0700.05316.25
5.4.100.0700.05016.40
5.4.90.0730.07716.31
5.4.80.0670.05716.56
5.4.70.0700.05316.18
5.4.60.0830.04716.29
5.4.50.0600.04316.28
5.4.40.0800.07016.28
5.4.30.0900.05716.32
5.4.20.0670.06716.32
5.4.10.0800.05716.21
5.4.00.0830.04315.94
5.3.290.0800.05314.64
5.3.280.0830.05314.45
5.3.270.0800.06014.48
5.3.260.0830.04714.69
5.3.250.0670.04714.44
5.3.240.0530.05714.69
5.3.230.0530.06014.43
5.3.220.0800.05314.54
5.3.210.0770.06014.57
5.3.200.0830.06314.67
5.3.190.0800.05014.45
5.3.180.0700.05714.35
5.3.170.0870.05014.39
5.3.160.0730.05014.64
5.3.150.0700.05314.57
5.3.140.0670.05314.52
5.3.130.0800.06714.38
5.3.120.0800.05314.39
5.3.110.0800.05014.63
5.3.100.0900.06313.87
5.3.90.0670.05713.86
5.3.80.0600.04313.90
5.3.70.0530.05313.86
5.3.60.0370.05013.94
5.3.50.0070.05014.02
5.3.40.0100.04713.89
5.3.30.0730.04013.74
5.3.20.0570.05313.50
5.3.10.0570.04313.45
5.3.00.0700.04313.47
5.2.170.0700.04010.98
5.2.160.0570.04710.93
5.2.150.0670.04011.08
5.2.140.0500.04011.13
5.2.130.0500.04010.94
5.2.120.0470.04010.98
5.2.110.0400.04711.14
5.2.100.0600.04311.04
5.2.90.0600.04010.96
5.2.80.0630.04711.14
5.2.70.0430.04310.93
5.2.60.0500.04010.99
5.2.50.0670.03310.99
5.2.40.0600.04711.04
5.2.30.0370.04011.04
5.2.20.0230.04310.75
5.2.10.0100.03710.90
5.2.00.0100.03710.80
5.1.60.0100.03010.14
5.1.50.0070.0439.85
5.1.40.0430.0309.88
5.1.30.0430.04010.24
5.1.20.0370.03710.39
5.1.10.0570.0339.94
5.1.00.0530.03710.14
5.0.50.0170.0338.38
5.0.40.0270.0208.45
5.0.30.0200.0438.23
5.0.20.0230.0238.09
5.0.10.0230.0278.21
5.0.00.0200.0438.07
4.4.90.0170.0235.81
4.4.80.0170.0235.82
4.4.70.0200.0205.81
4.4.60.0200.0205.75
4.4.50.0200.0205.79
4.4.40.0270.0305.80
4.4.30.0200.0205.73
4.4.20.0270.0235.89
4.4.10.0230.0175.85
4.4.00.0230.0305.87
4.3.110.0170.0235.77
4.3.100.0200.0235.74
4.3.90.0230.0205.73
4.3.80.0230.0335.69
4.3.70.0270.0175.73
4.3.60.0170.0235.73
4.3.50.0300.0205.66
4.3.40.0200.0305.63
4.3.30.0170.0174.55
4.3.20.0200.0204.50
4.3.10.0100.0204.46
4.3.00.0100.0237.11

preferences:
35.56 ms | 401 KiB | 5 Q