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 < $length; $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)
8.3.60.0070.01418.30
8.3.50.0120.00316.63
8.3.40.0160.00618.68
8.3.30.0040.01118.89
8.3.20.0090.00020.37
8.3.10.0040.00421.85
8.3.00.0040.00422.57
8.2.180.0120.00316.32
8.2.170.0070.00722.96
8.2.160.0100.00319.45
8.2.150.0080.00024.18
8.2.140.0080.00624.66
8.2.130.0070.00020.68
8.2.120.0040.00426.35
8.2.110.0200.00319.33
8.2.100.0100.00317.91
8.2.90.0000.00917.97
8.2.80.0050.00317.63
8.2.70.0050.00317.63
8.2.60.0040.00417.93
8.2.50.0030.00618.07
8.2.40.0040.00418.22
8.2.30.0050.00318.04
8.2.20.0040.00417.99
8.2.10.0080.00018.07
8.2.00.0040.00418.38
8.1.280.0120.00425.92
8.1.270.0000.00724.02
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00322.65
8.1.230.0070.00721.10
8.1.220.0040.00417.79
8.1.210.0000.00819.01
8.1.200.0040.00417.48
8.1.190.0040.00417.35
8.1.180.0050.00318.10
8.1.170.0050.00318.71
8.1.160.0000.00719.05
8.1.150.0050.00320.27
8.1.140.0040.00419.65
8.1.130.0030.00319.00
8.1.120.0000.00717.58
8.1.110.0050.00317.59
8.1.100.0040.00417.57
8.1.90.0040.00417.52
8.1.80.0050.00217.59
8.1.70.0030.00317.55
8.1.60.0000.00717.75
8.1.50.0000.00817.60
8.1.40.0030.00617.53
8.1.30.0040.00417.57
8.1.20.0020.00517.76
8.1.10.0000.00717.58
8.1.00.0060.00317.55
8.0.300.0030.00620.07
8.0.290.0070.00016.88
8.0.280.0040.00418.60
8.0.270.0000.00716.95
8.0.260.0000.00619.08
8.0.250.0040.00316.97
8.0.240.0030.00317.04
8.0.230.0030.00516.96
8.0.220.0030.00317.12
8.0.210.0000.00717.18
8.0.200.0000.00717.07
8.0.190.0030.00516.96
8.0.180.0000.00716.94
8.0.170.0000.00817.00
8.0.160.0030.00317.03
8.0.150.0040.00416.99
8.0.140.0070.00016.91
8.0.130.0000.00713.40
8.0.120.0040.00416.96
8.0.110.0030.00317.04
8.0.100.0000.00716.90
8.0.90.0040.00417.03
8.0.80.0090.00616.91
8.0.70.0000.00816.80
8.0.60.0080.00017.06
8.0.50.0000.00716.85
8.0.30.0120.00717.03
8.0.20.0100.00917.42
8.0.10.0040.00417.18
8.0.00.0110.01116.86
7.4.330.0000.00615.55
7.4.320.0000.00816.74
7.4.300.0030.00316.63
7.4.290.0000.00716.75
7.4.280.0050.00316.62
7.4.270.0070.00016.72
7.4.260.0070.00016.54
7.4.250.0030.00316.70
7.4.240.0050.00316.73
7.4.230.0040.00416.63
7.4.220.0120.00616.73
7.4.210.0070.00716.76
7.4.200.0050.00316.67
7.4.160.0100.00616.42
7.4.150.0140.01117.40
7.4.140.0100.00917.86
7.4.130.0070.01116.48
7.4.120.0120.00916.56
7.4.110.0080.00816.63
7.4.100.0140.00716.69
7.4.90.0150.00316.52
7.4.80.0060.01519.39
7.4.70.0130.00716.71
7.4.60.0100.00616.65
7.4.50.0000.01116.62
7.4.40.0130.00316.40
7.4.30.0040.01416.60
7.4.00.0030.01015.02
7.3.330.0040.00313.42
7.3.320.0060.00013.44
7.3.310.0060.00316.48
7.3.300.0040.00416.50
7.3.290.0070.00716.53
7.3.280.0070.01016.48
7.3.270.0100.00717.40
7.3.260.0100.00916.49
7.3.240.0110.00716.50
7.3.230.0030.01716.47
7.3.210.0100.00916.37
7.3.200.0100.01316.38
7.3.190.0030.01416.43
7.3.180.0120.00316.51
7.3.170.0120.00316.57
7.3.160.0080.00816.70
7.2.330.0090.00916.80
7.2.320.0090.01216.71
7.2.310.0150.00816.63
7.2.300.0060.01016.72
7.2.290.0160.00616.74
7.2.60.0030.01016.86
7.2.50.0090.00316.68
7.1.200.0000.00715.61
7.1.70.0060.00317.18
7.1.60.0040.00717.37
7.1.50.0670.01333.17
7.1.40.0170.01732.64
7.1.30.0270.01032.69
7.1.20.1870.02032.97
7.1.10.0100.00714.79
7.1.00.0400.01014.82
7.0.200.0100.00616.95
7.0.190.0400.00714.96
7.0.180.0070.01014.44
7.0.170.0570.00714.54
7.0.160.1930.00314.44
7.0.150.0070.01314.39
7.0.140.2270.00714.50
7.0.130.0070.01014.66
7.0.120.0030.01314.58
7.0.110.0070.01714.34
7.0.100.0130.01014.43
7.0.90.1630.01014.42
7.0.80.0100.01014.35
7.0.70.0070.01014.40
7.0.60.0900.01314.38
7.0.50.1770.00314.65
7.0.40.1400.01314.43
7.0.30.0970.01014.76
7.0.20.0600.01714.59
7.0.10.0070.00714.70
7.0.00.0100.00314.59

preferences:
54.13 ms | 400 KiB | 5 Q