3v4l.org

run code in 300+ PHP versions simultaneously
<?php $closestRadix = function(int $num) : int { $index = floor(log($num, 10)); $nextMag = 10**($index+1); return $nextMag - $num > $nextMag / 2 ? $index: $index + 1; }; $numDigits = function(int $num) : int { return floor(log($num, 10)) + 1; }; $isEven = function(int $num) : bool { return $num % 2 == 0; }; $isEvenNumberOfDigits = function(int $num) : bool { return $isEven($numDigits($num)); }; $mirror = function(int $num, bool $parityCase = false) : int { echo $num . "\n"; return (int)($parityCase ? substr((string)$num, 0, -1) : (string)$num . strrev((string)$num)); }; $halves = function(int $num) use ($isEvenNumberOfDigits, $numDigits) : array { $digitsPerHalf = $isEvenNumberOfDigits ? $numDigits($num)/2 : ceil($numDigits($num)/2); echo $digitsPerHalf; return [ substr((string)$num, 0, $digitsPerHalf), substr((string)$num, $digitsPerHalf, $digitsPerHalf) ]; }; $nextPalindrome = function(int $num) use ($halves, $mirror) : int { print_r($halves($num)); $smallestHalf = min($halves($num)); echo $smallestHalf . "\n"; return $halves($num)[0] == $smallestHalf ? $mirror($halves($num)[0])+1 : $mirror($halves($num)[1]); }; echo $nextPalindrome(110); ?> === 110 120 -> 121 999 1312 1314 -> 1331 121 131 191 202 1221 3113 9999

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)
8.3.60.0070.00717.00
8.3.50.0100.00718.10
8.3.40.0040.01118.95
8.3.30.0070.00719.08
8.3.20.0040.00420.41
8.3.10.0080.00022.16
8.3.00.0040.00423.78
8.2.180.0070.01418.63
8.2.170.0140.00722.96
8.2.160.0080.00619.76
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00021.19
8.2.120.0090.00026.16
8.2.110.0070.00317.88
8.2.100.0120.00018.16
8.2.90.0030.00619.50
8.2.80.0000.00819.56
8.2.70.0050.00317.75
8.2.60.0000.00818.29
8.2.50.0040.00418.28
8.2.40.0080.00020.70
8.2.30.0060.00319.57
8.2.20.0040.00418.25
8.2.10.0080.00018.44
8.2.00.0000.00718.25
8.1.280.0040.01925.92
8.1.270.0040.00421.09
8.1.260.0050.00226.35
8.1.250.0050.00328.09
8.1.240.0030.00624.21
8.1.230.0070.00421.16
8.1.220.0050.00318.02
8.1.210.0000.00818.77
8.1.200.0030.00617.50
8.1.190.0000.00817.48
8.1.180.0000.00818.10
8.1.170.0040.00418.96
8.1.160.0080.00019.02
8.1.150.0000.00820.40
8.1.140.0040.00419.75
8.1.130.0050.00219.14
8.1.120.0040.00417.74
8.1.110.0040.00417.66
8.1.100.0000.00817.77
8.1.90.0030.00517.61
8.1.80.0040.00417.73
8.1.70.0000.00817.73
8.1.60.0050.00317.89
8.1.50.0030.00517.81
8.1.40.0000.00817.64
8.1.30.0030.00517.73
8.1.20.0030.00617.80
8.1.10.0020.00517.85
8.1.00.0040.00417.67
8.0.300.0070.00018.77
8.0.290.0000.00717.13
8.0.280.0070.00018.61
8.0.270.0040.00417.50
8.0.260.0030.00319.12
8.0.250.0040.00417.27
8.0.240.0030.00617.27
8.0.230.0000.00817.27
8.0.220.0050.00217.21
8.0.210.0000.00717.07
8.0.200.0040.00417.25
8.0.190.0050.00317.17
8.0.180.0000.00817.26
8.0.170.0040.00417.27
8.0.160.0040.00417.11
8.0.150.0000.00717.12
8.0.140.0030.00517.18
8.0.130.0030.00313.64
8.0.120.0040.00417.06
8.0.110.0050.00217.14
8.0.100.0040.00417.07
8.0.90.0050.00317.24
8.0.80.0040.01217.18
8.0.70.0050.00217.19
8.0.60.0050.00317.27
8.0.50.0040.00417.23
8.0.30.0130.00617.34
8.0.20.0090.01117.43
8.0.10.0000.00817.33
8.0.00.0140.00416.99
7.4.330.0050.00015.55
7.4.320.0070.00016.67
7.4.300.0030.00316.86
7.4.290.0000.00716.88
7.4.280.0080.00016.83
7.4.270.0000.00816.83
7.4.260.0070.00016.85
7.4.250.0000.00716.77
7.4.240.0030.00316.74
7.4.230.0000.00716.88
7.4.220.0090.00916.76
7.4.210.0040.01116.94
7.4.200.0030.00316.77
7.4.160.0170.00216.72
7.4.150.0160.00617.40
7.4.140.0110.00817.86
7.4.130.0140.00416.79
7.4.120.0070.01116.76
7.4.110.0160.01016.80
7.4.100.0110.00716.85
7.4.90.0080.00816.84
7.4.80.0030.01519.39
7.4.70.0030.01316.75
7.4.60.0030.01316.73
7.4.50.0090.00916.50
7.4.40.0120.00616.74
7.4.30.0030.01316.94
7.4.00.0140.00315.20
7.3.330.0050.00013.46
7.3.320.0030.00313.49
7.3.310.0040.00416.61
7.3.300.0070.00016.54
7.3.290.0060.01016.60
7.3.280.0070.01016.59
7.3.270.0160.00317.40
7.3.260.0110.00716.68
7.3.250.0070.01316.70
7.3.240.0100.00716.81
7.3.230.0100.00716.82
7.3.210.0140.00716.91
7.3.200.0100.00716.79
7.3.190.0090.00916.56
7.3.180.0100.00616.54
7.3.170.0030.01316.66
7.3.160.0080.00816.70
7.3.120.0100.01014.92
7.3.110.0040.01515.06
7.3.100.0030.01415.50
7.3.90.0040.00815.53
7.3.80.0060.00315.36
7.3.70.0090.00615.32
7.3.60.0080.00415.28
7.3.50.0130.00315.19
7.3.40.0000.01715.17
7.3.30.0030.00715.09
7.3.20.0050.00517.03
7.3.10.0000.01216.99
7.3.00.0070.00516.93
7.2.330.0070.01017.06
7.2.320.0140.00717.03
7.2.310.0100.00716.95
7.2.300.0060.01117.06
7.2.290.0130.00316.80
7.2.250.0030.01215.30
7.2.240.0110.00715.43
7.2.230.0070.01015.59
7.2.220.0000.01015.48
7.2.210.0060.00915.19
7.2.200.0060.01015.57
7.2.190.0080.00415.58
7.2.180.0070.01015.40
7.2.170.0080.00515.14
7.2.130.0030.00916.77
7.2.120.0030.00716.87
7.2.110.0090.00316.87
7.2.100.0040.00417.04
7.2.90.0040.00817.17
7.2.80.0080.00316.94
7.2.70.0100.00317.11
7.2.60.0110.00517.17
7.2.50.0120.00317.15
7.2.40.0060.00316.93
7.2.30.0070.00416.81
7.2.20.0000.01316.84
7.2.10.0000.01117.09
7.2.00.0000.01117.19
7.1.330.0070.00715.96
7.1.320.0090.00616.13
7.1.310.0080.00816.25
7.1.300.0030.00916.48
7.1.290.0070.00316.25
7.1.280.0040.00416.15
7.1.270.0030.00716.13
7.1.260.0070.00315.86
7.1.250.0030.00615.64
7.1.200.0000.00815.88
7.1.90.0070.00716.73
7.1.80.0030.00917.96
7.1.70.0050.00917.45
7.1.60.0230.02235.27
7.1.50.0260.01034.69
7.1.40.0140.01734.61
7.1.30.0190.01334.68
7.1.20.0160.01034.74
7.1.10.0030.01317.01
7.1.00.0060.00616.88
7.0.230.0030.00917.81
7.0.220.0000.01317.79
7.0.210.0070.01116.93
7.0.200.0040.01116.90
7.0.190.0030.01116.85
7.0.180.0000.01416.39
7.0.170.0060.00616.63
7.0.160.0030.01016.50
7.0.150.0040.00816.64
7.0.140.0060.00716.53
7.0.130.0060.00616.67
7.0.120.0000.01216.59
7.0.110.0000.01316.55
7.0.100.0030.00916.61
7.0.90.0080.00416.45
7.0.80.0030.00916.61
7.0.70.0110.00716.79
7.0.60.0060.00616.38
7.0.50.0060.00616.50
7.0.40.0060.00916.60
7.0.30.0040.00916.54
7.0.20.0070.00516.87
7.0.10.0060.00616.87
7.0.00.0060.00616.63

preferences:
55.27 ms | 400 KiB | 5 Q