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); 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)
8.3.60.0040.01817.00
8.3.50.0100.01018.62
8.3.40.0130.00719.04
8.3.30.0070.00718.96
8.3.20.0050.00320.64
8.3.10.0050.00322.09
8.3.00.0080.00023.73
8.2.180.0140.00416.88
8.2.170.0060.00922.96
8.2.160.0120.00322.20
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0080.00021.30
8.2.120.0000.01526.35
8.2.110.0050.00521.16
8.2.100.0040.00818.22
8.2.90.0030.00619.34
8.2.80.0040.00419.57
8.2.70.0040.00417.88
8.2.60.0030.00518.29
8.2.50.0030.00518.47
8.2.40.0040.00420.72
8.2.30.0020.00519.62
8.2.20.0070.00018.30
8.2.10.0000.00818.44
8.2.00.0040.00418.43
8.1.280.0110.00425.92
8.1.270.0040.00421.04
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0040.00422.94
8.1.230.0080.00320.55
8.1.220.0040.00417.91
8.1.210.0000.00818.77
8.1.200.0060.00317.60
8.1.190.0000.00917.73
8.1.180.0040.00418.10
8.1.170.0000.00818.78
8.1.160.0080.00019.20
8.1.150.0000.00820.31
8.1.140.0000.00819.87
8.1.130.0030.00319.05
8.1.120.0070.00017.75
8.1.110.0040.00417.72
8.1.100.0080.00017.63
8.1.90.0040.00417.73
8.1.80.0000.00717.66
8.1.70.0070.00017.70
8.1.60.0040.00417.82
8.1.50.0030.00617.66
8.1.40.0030.00617.76
8.1.30.0060.00317.80
8.1.20.0080.00017.96
8.1.10.0030.00517.80
8.1.00.0080.00017.76
8.0.300.0060.00318.77
8.0.290.0000.00717.00
8.0.280.0040.00418.57
8.0.270.0070.00017.43
8.0.260.0030.00319.24
8.0.250.0000.00717.33
8.0.240.0030.00617.25
8.0.230.0040.00417.31
8.0.220.0000.00717.22
8.0.210.0070.00017.11
8.0.200.0000.00817.30
8.0.190.0050.00317.16
8.0.180.0040.00417.20
8.0.170.0050.00217.14
8.0.160.0000.00817.20
8.0.150.0040.00417.08
8.0.140.0000.00817.05
8.0.130.0000.00513.61
8.0.120.0070.00017.06
8.0.110.0040.00417.13
8.0.100.0050.00217.24
8.0.90.0000.00717.16
8.0.80.0090.00917.21
8.0.70.0040.00417.04
8.0.60.0000.00817.24
8.0.50.0040.00417.08
8.0.30.0090.01017.34
8.0.20.0080.01117.40
8.0.10.0000.00817.13
8.0.00.0070.01117.20
7.4.330.0050.00015.55
7.4.320.0070.00016.62
7.4.300.0040.00416.77
7.4.290.0000.00716.80
7.4.280.0070.00016.83
7.4.270.0000.00816.83
7.4.260.0000.00716.72
7.4.250.0050.00316.82
7.4.240.0040.00416.66
7.4.230.0000.00716.79
7.4.220.0120.00616.82
7.4.210.0030.01216.80
7.4.200.0050.00216.60
7.4.160.0140.00316.76
7.4.150.0100.00717.40
7.4.140.0100.01117.86
7.4.130.0160.00716.80
7.4.120.0100.00916.81
7.4.110.0120.00916.69
7.4.100.0080.00816.71
7.4.90.0170.00716.78
7.4.80.0070.01119.39
7.4.70.0130.00316.70
7.4.60.0090.01216.99
7.4.50.0040.01116.41
7.4.40.0090.00916.86
7.4.30.0080.00816.72
7.4.10.0060.01215.51
7.4.00.0070.01015.38
7.3.330.0000.00613.49
7.3.320.0030.00313.62
7.3.310.0070.00016.52
7.3.300.0030.00516.64
7.3.290.0130.00516.63
7.3.280.0080.01116.60
7.3.270.0140.00317.40
7.3.260.0130.00516.74
7.3.250.0100.00916.72
7.3.240.0110.00616.87
7.3.230.0110.01116.93
7.3.210.0110.01116.82
7.3.200.0130.00316.51
7.3.190.0060.01416.85
7.3.180.0130.00316.96
7.3.170.0130.00616.83
7.3.160.0040.01416.71
7.3.130.0100.00915.11
7.3.120.0070.01015.45
7.3.110.0080.01115.19
7.3.100.0080.00715.21
7.3.90.0060.00815.08
7.3.80.0060.00715.33
7.3.70.0050.00915.20
7.3.60.0060.00615.31
7.3.50.0060.00715.33
7.3.40.0070.00615.32
7.3.30.0070.00615.13
7.3.20.0080.00616.91
7.3.10.0060.00717.06
7.3.00.0090.00516.96
7.2.330.0090.00917.06
7.2.320.0000.02016.75
7.2.310.0120.00617.04
7.2.300.0080.00816.91
7.2.290.0100.00716.95
7.2.260.0070.01415.46
7.2.250.0020.01515.48
7.2.240.0050.01015.52
7.2.230.0070.01015.48
7.2.220.0080.00915.47
7.2.210.0070.00915.49
7.2.200.0040.00915.46
7.2.190.0060.00815.52
7.2.180.0050.01115.52
7.2.170.0070.00815.40
7.2.160.0070.00715.37
7.2.150.0040.01317.27
7.2.140.0050.01017.21
7.2.130.0030.01117.29
7.2.120.0060.00617.19
7.2.110.0050.01117.22
7.2.100.0070.00817.29
7.2.90.0070.00917.29
7.2.80.0040.01117.31
7.2.70.0050.00717.29
7.2.60.0090.00517.36
7.2.50.0050.01217.36
7.2.40.0040.01117.12
7.2.30.0080.00517.21
7.2.20.0110.00117.31
7.2.10.0030.01017.39
7.2.00.0050.00817.39
7.1.330.0030.01016.29
7.1.320.0070.01016.30
7.1.310.0000.01216.07
7.1.300.0050.00916.07
7.1.290.0050.00816.04
7.1.280.0080.00816.21
7.1.270.0060.00816.24
7.1.260.0010.01016.04
7.1.250.0040.00816.21
7.1.240.0070.00616.12
7.1.230.0030.01216.09
7.1.220.0050.00816.15
7.1.210.0090.00416.17
7.1.200.0040.01016.12
7.1.190.0030.00816.11
7.1.180.0040.00916.18
7.1.170.0030.01216.04
7.1.160.0030.01116.16
7.1.150.0030.00915.97
7.1.140.0090.00416.29
7.1.130.0070.00716.10
7.1.120.0000.01416.15
7.1.110.0040.00716.12
7.1.100.0090.00416.33
7.1.90.0050.00816.85
7.1.80.0060.00516.79
7.1.70.0090.00416.39
7.1.60.0070.01222.52
7.1.50.0120.00622.37
7.1.40.0080.00822.19
7.1.30.0100.00922.21
7.1.20.0080.00922.21
7.1.10.0090.00516.31
7.1.00.0060.00716.48
7.0.330.0080.00515.78
7.0.320.0050.00715.81
7.0.310.0080.00715.69
7.0.300.0070.00515.70
7.0.290.0080.00715.66
7.0.280.0000.01215.73
7.0.270.0050.00615.80
7.0.260.0050.00515.78
7.0.250.0050.00315.78
7.0.240.0070.00515.77
7.0.230.0030.01116.46
7.0.220.0040.00816.33
7.0.210.0070.00516.06
7.0.200.0080.00616.17
7.0.190.0040.00916.11
7.0.180.0040.00616.08
7.0.170.0070.00615.90
7.0.160.0060.00815.94
7.0.150.0040.01016.01
7.0.140.0020.01215.88
7.0.130.0080.00516.11
7.0.120.0080.00616.14
7.0.110.0060.00716.00
7.0.100.0080.00415.94
7.0.90.0060.00715.79
7.0.80.0080.00315.90
7.0.70.0060.00616.02
7.0.60.0050.00815.96
7.0.50.0060.00715.48
7.0.40.0080.00714.23
7.0.30.0060.00714.20
7.0.20.0060.00514.10
7.0.10.0050.00614.12
7.0.00.0030.00814.70
5.6.400.0030.01014.15
5.6.390.0080.00614.03
5.6.380.0030.00814.21
5.6.370.0090.00613.98
5.6.360.0050.01014.19
5.6.350.0040.00814.31
5.6.340.0070.00914.16
5.6.330.0080.00614.00
5.6.320.0030.00814.15
5.6.310.0040.00914.16
5.6.300.0030.01114.09
5.6.290.0060.00413.95
5.6.280.0090.00414.15
5.6.270.0020.01314.22
5.6.260.0030.00814.11
5.6.250.0000.01214.14
5.6.240.0070.00514.07
5.6.230.0060.00514.14
5.6.220.0030.01214.27
5.6.210.0020.01114.17
5.6.200.0030.00914.05
5.6.190.0070.00714.10
5.6.180.0060.00614.21
5.6.170.0080.00314.06
5.6.160.0080.00514.14
5.6.150.0050.01014.03
5.6.140.0050.00814.08
5.6.130.0100.00514.05
5.6.120.0040.00714.09
5.6.110.0060.00614.09
5.6.100.0070.00714.00
5.6.90.0060.00514.06
5.6.80.0020.00614.17
5.6.70.0070.00714.09
5.6.60.0050.00914.17
5.6.50.0050.00714.03
5.6.40.0070.00614.16
5.6.30.0060.00914.04
5.6.20.0100.00514.05
5.6.10.0130.00214.04
5.6.00.0080.00614.02

preferences:
75.44 ms | 400 KiB | 5 Q