3v4l.org

run code in 300+ PHP versions simultaneously
<?php $encodings = mb_list_encodings(); var_dump(count($encodings)); $results = []; foreach ($encodings as $encoding) { foreach (["\r", "\r\n"] as $string) { if (strlen($string) !== mb_strlen($string, $encoding)) { $results[] = [ 'encoding' => $encoding, 'char' => "\r" === $string ? '\r' : '\r\n', 'strlen' => strlen($string), 'mb_strlen' => mb_strlen($string, $encoding), ]; } } } print_r($results);

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)
8.3.60.0150.00317.00
8.3.50.0140.00416.24
8.3.40.0070.01018.96
8.3.30.0060.00918.84
8.3.20.0080.00021.59
8.3.10.0040.00423.49
8.3.00.0070.00018.09
8.2.180.0080.00817.13
8.2.170.0120.00322.96
8.2.160.0100.00319.36
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0050.00326.16
8.2.120.0040.00419.93
8.2.110.0030.00620.60
8.2.100.0030.00918.09
8.2.90.0080.00019.46
8.2.80.0000.00719.51
8.2.70.0040.00417.88
8.2.60.0080.00018.16
8.2.50.0040.00418.10
8.2.40.0040.00420.68
8.2.30.0040.00419.64
8.2.20.0040.00418.20
8.2.10.0050.00318.30
8.2.00.0000.00718.31
8.1.280.0140.00425.92
8.1.270.0090.00023.84
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00321.09
8.1.230.0040.00817.95
8.1.220.0000.00817.88
8.1.210.0050.00318.77
8.1.200.0030.00617.60
8.1.190.0040.00417.60
8.1.180.0000.00918.10
8.1.170.0050.00318.57
8.1.160.0000.00719.02
8.1.150.0080.00020.41
8.1.140.0080.00019.70
8.1.130.0090.00019.06
8.1.120.0070.00017.67
8.1.110.0000.00717.63
8.1.100.0000.00817.73
8.1.90.0070.00017.56
8.1.80.0090.00317.55
8.1.70.0050.00217.68
8.1.60.0040.00417.74
8.1.50.0000.00717.75
8.1.40.0040.00417.76
8.1.30.0040.00417.81
8.1.20.0040.00417.86
8.1.10.0000.00817.65
8.1.00.0050.00317.64
8.0.300.0060.00318.77
8.0.290.0060.00316.88
8.0.280.0080.00018.52
8.0.270.0040.00417.33
8.0.260.0050.00316.89
8.0.250.0000.00717.11
8.0.240.0040.00417.13
8.0.230.0070.00017.16
8.0.220.0070.00417.03
8.0.210.0000.00717.11
8.0.200.0040.00417.13
8.0.190.0050.00517.13
8.0.180.0070.00317.05
8.0.170.0040.00417.07
8.0.160.0000.00817.14
8.0.150.0000.00717.10
8.0.140.0040.00416.89
8.0.130.0000.00613.46
8.0.120.0000.00817.01
8.0.110.0000.00817.06
8.0.100.0040.00417.11
8.0.90.0070.00016.86
8.0.80.0060.01317.07
8.0.70.0040.00416.93
8.0.60.0070.00017.07
8.0.50.0040.00416.95
8.0.30.0090.00717.21
8.0.20.0090.01017.40
8.0.10.0080.00017.11
8.0.00.0120.00616.98
7.4.330.0030.00315.55
7.4.320.0000.00616.70
7.4.300.0000.00616.65
7.4.290.0040.00816.64
7.4.280.0030.00616.77
7.4.270.0070.00016.60
7.4.260.0030.00316.63
7.4.250.0040.00416.67
7.4.240.0080.00016.68
7.4.230.0030.00316.51
7.4.220.0060.01316.71
7.4.210.0070.00716.66
7.4.200.0050.00316.49
7.4.160.0090.01416.53
7.4.150.0140.00617.40
7.4.140.0130.00917.86
7.4.130.0130.00916.55
7.4.120.0130.00916.74
7.4.110.0100.01016.71
7.4.100.0060.01216.73
7.4.90.0110.00816.49
7.4.80.0160.00619.39
7.4.70.0030.01316.51
7.4.60.0090.01216.52
7.4.50.0070.00716.66
7.4.40.0100.00716.64
7.4.30.0070.01016.60
7.4.10.0130.00615.14
7.4.00.0070.01014.94
7.3.330.0000.00513.40
7.3.320.0000.00513.32
7.3.310.0050.00216.53
7.3.300.0030.00316.54
7.3.290.0040.01316.47
7.3.280.0090.00916.48
7.3.270.0210.00417.40
7.3.260.0160.00216.58
7.3.250.0100.00916.64
7.3.240.0100.00916.74
7.3.230.0040.01216.66
7.3.210.0210.01116.65
7.3.200.0070.01016.49
7.3.190.0080.00816.67
7.3.180.0120.01116.56
7.3.170.0080.01216.47
7.3.160.0060.01016.61
7.3.130.0090.00915.24
7.3.120.0110.00715.03
7.3.110.0030.01215.06
7.3.100.0000.01715.06
7.3.90.0040.01114.97
7.3.80.0060.00914.91
7.3.70.0100.00315.06
7.3.60.0130.00314.93
7.3.50.0040.01215.08
7.3.40.0030.01315.07
7.3.30.0060.00614.95
7.3.20.0060.00916.53
7.3.10.0040.01116.71
7.3.00.0070.00616.80
7.2.330.0090.00916.55
7.2.320.0060.01116.88
7.2.310.0080.00816.90
7.2.300.0090.00916.95
7.2.290.0070.01016.77
7.2.260.0120.00615.48
7.2.250.0060.01215.38
7.2.240.0070.00715.14
7.2.230.0030.01115.10
7.2.220.0040.01115.23
7.2.210.0100.00315.09
7.2.200.0110.00415.18
7.2.190.0030.00715.24
7.2.180.0090.00915.31
7.2.170.0100.00715.21
7.2.160.0030.00715.07
7.2.150.0070.01117.07
7.2.140.0170.00017.07
7.2.130.0060.00517.13
7.2.120.0080.00517.12
7.2.110.0020.01217.04
7.2.100.0050.00817.16
7.2.90.0060.00817.08
7.2.80.0050.00817.11
7.2.70.0050.01016.99
7.2.60.0020.00917.03
7.2.50.0020.01117.07
7.2.40.0050.00617.14
7.2.30.0020.01217.14
7.2.20.0070.00517.07
7.2.10.0020.01517.10
7.2.00.0100.00616.88
7.1.330.0000.01515.90
7.1.320.0070.00716.08
7.1.310.0120.00316.05
7.1.300.0100.00715.94
7.1.290.0030.01415.77
7.1.280.0060.00616.06
7.1.270.0070.00715.94
7.1.260.0060.00615.67
7.1.250.0040.01116.04
7.1.240.0070.01016.01
7.1.230.0110.00315.92
7.1.220.0050.01015.73
7.1.210.0040.00915.96
7.1.200.0030.00816.05
7.1.190.0010.00816.07
7.1.180.0060.00615.98
7.1.170.0040.00715.96
7.1.160.0040.00715.90
7.1.150.0060.00615.96
7.1.140.0050.00616.01
7.1.130.0090.00615.87
7.1.120.0060.00715.90
7.1.110.0050.00816.02
7.1.100.0100.00515.85
7.1.90.0050.01015.87
7.1.80.0050.00516.05
7.1.70.0010.01216.40
7.1.60.0300.00921.77
7.1.50.0330.00821.64
7.1.40.0320.00721.65
7.1.30.0270.01221.62
7.1.20.0530.01121.54
7.1.10.0210.01115.71
7.1.00.0240.00715.62
7.0.330.0110.00915.60
7.0.320.0120.00715.60
7.0.310.0060.01115.52
7.0.300.0110.00815.50
7.0.290.0040.01115.45
7.0.280.0130.00715.57
7.0.270.0110.01015.38
7.0.260.0100.00815.45
7.0.250.0130.00915.54
7.0.240.0080.01015.46
7.0.230.0120.00815.47
7.0.220.0080.01115.44
7.0.210.0140.00515.64
7.0.200.0290.01015.52
7.0.190.0270.00815.24
7.0.180.0310.00715.26
7.0.170.0360.01015.23
7.0.160.0370.01115.15
7.0.150.0300.01015.21
7.0.140.0230.01615.06
7.0.130.0360.01315.43
7.0.120.0310.00915.15
7.0.110.0390.01015.18
7.0.100.0280.00815.11
7.0.90.0320.01215.14
7.0.80.0290.01015.34
7.0.70.0240.01315.15
7.0.60.0410.00715.25
7.0.50.0290.00815.35
7.0.40.0220.01014.03
7.0.30.0270.01013.99
7.0.20.0240.01013.91
7.0.10.0270.01113.96
7.0.00.0310.00813.99
5.6.400.0030.01414.62
5.6.390.0100.01314.64
5.6.380.0100.01014.86
5.6.370.0060.01214.76
5.6.360.0110.00714.95
5.6.350.0070.01014.93
5.6.340.0000.01414.70
5.6.330.0150.00314.70
5.6.320.0140.00014.46
5.6.310.0090.00914.96
5.6.300.0110.00714.59
5.6.290.0110.00714.54
5.6.280.0100.01014.91
5.6.270.0030.00914.95
5.6.260.0040.01114.48
5.6.250.0060.00914.63
5.6.240.0060.01414.69
5.6.230.0100.00714.48
5.6.220.0090.00314.71
5.6.210.0040.01514.36
5.6.200.0090.00414.39
5.6.190.0180.00014.52
5.6.180.0090.00914.74
5.6.170.0040.00814.36
5.6.160.0060.00914.28
5.6.150.0030.01914.47
5.6.140.0030.01314.25
5.6.130.0090.00914.86
5.6.120.0040.00814.41
5.6.110.0040.00714.52
5.6.100.0130.00314.61
5.6.90.0090.00614.57
5.6.80.0030.00914.74
5.6.70.0120.00614.65
5.6.60.0100.01014.51
5.6.50.0130.00314.68
5.6.40.0070.01014.65
5.6.30.0090.00914.50
5.6.20.0070.01614.23
5.6.10.0130.01014.33
5.6.00.0000.01914.65

preferences:
57.25 ms | 400 KiB | 5 Q