3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* Напиши программу, проверяющую, является ли строка палиндромом. */ $text = 'А роза упала на лапу Азора'; $result = 'палиндром'; $text = mb_strtolower($text); $text = str_replace(' ', '', $text); $length = mb_strlen($text); $halfLength = floor($length / 2); for ($i = 0; $i < $halfLength; $i++) { $left = mb_substr($text, $i, 1); $right = mb_substr($text, -($i + 1), 1); if ($left != $right) { $result = 'не палиндром'; break; } } echo "Результат: {$result}.";

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)
8.3.60.0110.00716.50
8.3.50.0130.00521.14
8.3.40.0070.00718.48
8.3.30.0040.01118.71
8.3.20.0000.00720.47
8.3.10.0040.00421.90
8.3.00.0080.00022.39
8.2.180.0070.01416.50
8.2.170.0070.00722.96
8.2.160.0100.00319.17
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0040.00420.47
8.2.120.0060.00326.35
8.2.110.0070.00320.52
8.2.100.0050.00517.84
8.2.90.0040.00419.22
8.2.80.0050.00317.97
8.2.70.0000.00817.63
8.2.60.0000.00817.80
8.2.50.0040.00418.22
8.2.40.0050.00220.51
8.2.30.0040.00419.29
8.2.20.0040.00418.13
8.2.10.0040.00418.18
8.2.00.0000.00818.26
8.1.280.0100.00725.92
8.1.270.0040.00423.91
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0070.01424.04
8.1.230.0070.00322.31
8.1.220.0060.00317.74
8.1.210.0080.00018.77
8.1.200.0030.00617.25
8.1.190.0080.00317.47
8.1.180.0040.00418.10
8.1.170.0080.00018.64
8.1.160.0040.00418.89
8.1.150.0000.00820.20
8.1.140.0030.00719.67
8.1.130.0070.00017.55
8.1.120.0050.00317.43
8.1.110.0080.00317.57
8.1.100.0040.00417.61
8.1.90.0000.00717.54
8.1.80.0030.00617.49
8.1.70.0000.00717.64
8.1.60.0000.00917.71
8.1.50.0040.00417.54
8.1.40.0060.00317.70
8.1.30.0040.00417.70
8.1.20.0000.00717.69
8.1.10.0050.00317.55
8.1.00.0000.00917.60
8.0.300.0070.00018.77
8.0.290.0000.00816.88
8.0.280.0000.00718.59
8.0.270.0070.00017.26
8.0.260.0030.00316.82
8.0.250.0030.00317.07
8.0.240.0080.00017.00
8.0.230.0030.00617.13
8.0.220.0030.00316.96
8.0.210.0040.00417.10
8.0.200.0000.00717.00
8.0.190.0060.00317.00
8.0.180.0000.00817.04
8.0.170.0030.00517.07
8.0.160.0040.00417.05
8.0.150.0070.00016.86
8.0.140.0000.00716.97
8.0.130.0000.00913.44
8.0.120.0000.00716.98
8.0.110.0000.00716.87
8.0.100.0000.00716.86
8.0.90.0000.00717.07
8.0.80.0060.00917.09
8.0.70.0030.00517.03
8.0.60.0000.00816.98
8.0.50.0050.00216.96
8.0.30.0110.00717.13
8.0.20.0110.00717.40
8.0.10.0050.00217.08
8.0.00.0100.00716.78
7.4.330.0070.00015.55
7.4.320.0060.00016.66
7.4.300.0000.00616.55
7.4.290.0000.01016.74
7.4.280.0000.00816.73
7.4.270.0030.00316.63
7.4.260.0030.00616.66
7.4.250.0000.00716.77
7.4.240.0030.00316.64
7.4.230.0000.00716.76
7.4.220.0120.01516.66
7.4.210.0200.00716.58
7.4.200.0030.00316.72
7.4.160.0100.00616.61
7.4.150.0070.01117.40
7.4.140.0150.00817.86
7.4.130.0120.00716.53
7.4.120.0100.01016.55
7.4.110.0140.00316.54
7.4.100.0080.00816.55
7.4.90.0080.00916.57
7.4.80.0120.00619.39
7.4.70.0150.00316.70
7.4.60.0060.01516.64
7.4.50.0090.00616.23
7.4.40.0100.00716.51
7.4.30.0030.01316.66
7.4.00.0080.00815.12
7.3.330.0030.00313.40
7.3.320.0050.00013.43
7.3.310.0030.00316.56
7.3.300.0070.00016.32
7.3.290.0080.00916.50
7.3.280.0110.00716.55
7.3.270.0130.00317.40
7.3.260.0080.01416.49
7.3.240.0120.00416.42
7.3.230.0030.01316.50
7.3.210.0060.01016.39
7.3.200.0130.00416.59
7.3.190.0030.01416.53
7.3.180.0070.01016.38
7.3.170.0100.00616.82
7.3.160.0040.01416.57
7.2.330.0140.00316.59
7.2.320.0100.01316.57
7.2.310.0120.00316.81
7.2.300.0100.00716.78
7.2.290.0090.00916.56
7.2.60.0030.01317.09
7.1.200.0030.00915.84
7.1.70.0000.00717.36
7.1.60.0040.00717.24
7.1.50.0050.00517.09
7.1.40.0100.01316.66
7.1.30.0040.01216.77
7.1.20.0000.01116.80
7.1.10.0040.00416.62
7.1.00.0030.00516.55
7.0.200.0000.00716.53
7.0.190.0100.00316.83
7.0.180.0000.01216.52
7.0.170.0050.00316.52
7.0.160.0040.00416.52
7.0.150.0000.00916.52
7.0.140.0040.00416.52
7.0.130.0040.00416.71
7.0.120.0070.00716.52
7.0.110.0060.00316.52
7.0.100.0040.00416.52
7.0.90.0030.00616.52
7.0.80.0000.00816.52
7.0.70.0030.00816.52
7.0.60.0060.00616.52
7.0.50.0040.00416.52
7.0.40.0060.00616.52
7.0.30.0000.00816.52
7.0.20.0040.00416.52
7.0.10.0000.00716.52
7.0.00.0000.01016.52

preferences:
51.06 ms | 401 KiB | 5 Q