3v4l.org

run code in 300+ PHP versions simultaneously
<?php function compare($left, $right) { if (($length = mb_strlen($left)) != mb_strlen($right)) { return false; } for ($i = 0, $result = 0; $i < $length; $i++) { $result |= ord($left[$i]) ^ ord($right[$i]); } return $result === 0; } var_dump(compare('Ð', 'Â')); var_dump(mb_strlen('Â')); var_dump(strlen('Ð')); var_dump(ord('Ð')); var_dump(ord('Â')); function test($char) { $length = strlen($char); for($i = 0; $i < $length; $i++) { var_dump(ord($char[$i])); } } var_dump(test('Ð'));

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)
8.3.60.0070.01418.31
8.3.50.0080.01221.11
8.3.40.0120.01218.65
8.3.30.0160.00618.54
8.3.20.0070.00020.19
8.3.10.0040.00421.90
8.3.00.0070.00021.73
8.2.180.0110.00718.43
8.2.170.0070.00722.96
8.2.160.0200.00020.43
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0050.00320.69
8.2.120.0030.00626.35
8.2.110.0090.00019.33
8.2.100.0080.00417.93
8.2.90.0050.00319.17
8.2.80.0030.00617.97
8.2.70.0060.00317.50
8.2.60.0030.00618.03
8.2.50.0040.00418.09
8.2.40.0030.00622.32
8.2.30.0040.00419.42
8.2.20.0040.00417.63
8.2.10.0070.00018.03
8.2.00.0000.00718.02
8.1.280.0140.00725.92
8.1.270.0040.00422.19
8.1.260.0040.00428.09
8.1.250.0050.00328.09
8.1.240.0070.00322.23
8.1.230.0110.00017.89
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0100.00017.23
8.1.190.0000.00817.13
8.1.180.0000.00818.10
8.1.170.0060.00318.50
8.1.160.0030.00320.63
8.1.150.0040.00418.89
8.1.140.0030.00519.56
8.1.130.0070.00017.65
8.1.120.0040.00417.43
8.1.110.0070.00017.49
8.1.100.0000.00717.37
8.1.90.0050.00317.41
8.1.80.0040.00417.21
8.1.70.0000.00817.38
8.1.60.0040.00817.67
8.1.50.0000.00817.48
8.1.40.0030.00617.61
8.1.30.0080.00017.78
8.1.20.0050.00317.66
8.1.10.0000.00817.56
8.1.00.0070.00017.56
8.0.300.0040.00418.77
8.0.290.0000.00816.75
8.0.280.0000.00718.50
8.0.270.0050.00317.20
8.0.260.0000.00617.25
8.0.250.0030.00317.01
8.0.240.0030.00316.96
8.0.230.0030.00316.86
8.0.220.0000.00716.82
8.0.210.0030.00316.89
8.0.200.0060.00016.88
8.0.190.0000.00717.00
8.0.180.0000.00716.92
8.0.170.0070.00016.86
8.0.160.0030.00316.75
8.0.150.0040.00416.86
8.0.140.0040.00416.76
8.0.130.0060.00013.32
8.0.120.0000.00716.89
8.0.110.0040.00416.84
8.0.100.0050.00316.75
8.0.90.0000.00816.76
8.0.80.0140.00716.84
8.0.70.0040.00416.70
8.0.60.0040.00416.78
8.0.50.0040.00416.67
8.0.30.0120.00717.23
8.0.20.0080.01117.40
8.0.10.0040.00416.89
8.0.00.0100.00716.79
7.4.330.0060.00016.72
7.4.320.0060.00016.48
7.4.300.0000.00616.44
7.4.290.0000.00716.60
7.4.280.0040.00416.45
7.4.270.0030.00316.54
7.4.260.0000.00816.43
7.4.250.0000.00716.36
7.4.240.0070.00016.51
7.4.230.0040.00416.40
7.4.220.0120.01216.47
7.4.210.0080.00816.46
7.4.200.0000.00716.62
7.4.160.0030.01316.57
7.4.150.0090.00917.40
7.4.140.0070.01217.86
7.4.130.0050.01416.54
7.4.120.0060.01116.45
7.4.110.0070.01016.70
7.4.100.0160.00316.67
7.4.90.0090.01116.38
7.4.80.0070.01019.39
7.4.70.0070.01016.54
7.4.60.0100.00716.58
7.4.50.0030.01416.49
7.4.40.0100.00716.45
7.4.30.0070.01416.62
7.4.00.0060.00614.75
7.3.330.0030.00313.14
7.3.320.0000.00513.38
7.3.310.0040.00416.38
7.3.300.0000.00716.23
7.3.290.0120.00516.35
7.3.280.0130.00616.35
7.3.270.0150.00617.40
7.3.260.0130.01316.57
7.3.250.0100.01316.36
7.3.240.0130.00416.51
7.3.230.0090.00616.65
7.3.210.0040.01216.22
7.3.200.0030.01419.39
7.3.190.0090.01216.35
7.3.180.0090.00916.66
7.3.170.0120.00916.41
7.3.160.0040.01216.57
7.2.330.0130.00716.46
7.2.320.0090.00916.45
7.2.310.0160.00016.74
7.2.300.0090.00916.73
7.2.290.0100.00916.64
7.1.70.0000.01017.26
7.1.60.0060.01919.40
7.1.50.0040.01816.99
7.1.00.0070.07322.42
7.0.200.0480.00714.66
7.0.60.0300.03319.98
7.0.50.0170.07017.86
7.0.40.0070.04019.97
7.0.30.0200.08320.09
7.0.20.0070.05020.13
7.0.10.0070.09020.07
7.0.00.0100.04020.06
5.6.280.0000.07321.10
5.6.210.0070.03720.73
5.6.200.0030.07318.27
5.6.190.0030.05020.63
5.6.180.0230.08720.61
5.6.170.0270.05720.52
5.6.160.0070.07320.57
5.6.150.0030.04318.19
5.6.140.0030.08318.23
5.6.130.0030.09018.17
5.6.120.0130.07721.00
5.6.110.0070.07321.16
5.6.100.0070.08321.14
5.6.90.0170.06020.96
5.6.80.0070.05320.50
5.5.350.0300.06020.41
5.5.340.0030.07318.02
5.5.330.0130.07720.30
5.5.320.0130.06320.29
5.5.310.0300.07720.29
5.5.300.0070.08017.96
5.5.290.0030.05317.92
5.5.280.0070.07720.77
5.5.270.0100.05320.73
5.5.260.0070.07720.66
5.5.250.0070.03720.57
5.5.240.4200.03320.33

preferences:
49.49 ms | 401 KiB | 5 Q