3v4l.org

run code in 300+ PHP versions simultaneously
<?php function prepareArray($str) { $onlyLowerLetters = preg_replace('/[^a-z]/', '', strtolower($str)); $stringArray = str_split(str_replace(' ', '', $onlyLowerLetters)); $uniqueArray = array_unique($stringArray); $countsArray = []; foreach ($uniqueArray as $letter) { $countsArray[$letter] = substr_count($onlyLowerLetters, $letter); } unset($letter); foreach ($countsArray as $k => $v) { if ($v === 1) unset($countsArray[$k]); } arsort($countsArray); // reset($countsArray); return $countsArray; } function getIntersect($a1, $a2) { $ar = array_intersect_assoc($a1, $a2); $intersect = []; foreach ($ar as $k => $v) { $intersect[$k] = $v; } return $intersect; } function compareArrays($a1, $a2) { // var_export($a1); // var_export($a2); $resultArray = []; foreach ($a1 as $k => $v) { $resultArray[$k][0] = $v; if (isset($a2[$k]) && $a1[$k] > $a2[$k]) { $resultArray[$k][0] = $v; } } foreach ($a2 as $k => $v) { $resultArray[$k][1] = $v; if (isset($a1[$k]) && $a1[$k] < $a2[$k]) { $resultArray[$k][1] = $v; } } return $resultArray; } function mix($s1, $s2) { $s1Prepared = prepareArray($s1); $s2Prepared = prepareArray($s2); // var_export($s1Prepared); // echo "\n"; // var_export($s2Prepared); // echo "\n"; $intersectArray = getIntersect($s1Prepared, $s2Prepared); // var_export($intersectArray); // echo "\n"; $diffArray = compareArrays(array_diff_key($s1Prepared, $intersectArray), array_diff_key($s2Prepared, $intersectArray)); // var_export($diffArray); // echo "\n"; foreach ($intersectArray as $letter=>$number) { $resultArray[$letter][2] = $number; } $resultArray = $diffArray + $resultArray; var_export($resultArray); echo "\n"; $str = []; foreach ($resultArray as $letter=>$allNumbers) { if ( (isset($allNumbers[0], $allNumbers[1]) && ($allNumbers[0] > $allNumbers[1]) ) || ( isset($allNumbers[0]) && !isset($allNumbers[1]) ) ) { $str[$allNumbers[0]]['letter'] = $letter; $str[$allNumbers[0]]['string'] = '1'; //$str[] = '1:' . str_repeat($letter, $allNumbers[0]); } if ( (isset($allNumbers[0], $allNumbers[1]) && ($allNumbers[0] < $allNumbers[1]) ) || ( isset($allNumbers[1]) && !isset($allNumbers[0]) ) ) { $str[$allNumbers[1]]['letter'] = $letter; $str[$allNumbers[1]]['string'] = '2'; // $str[] = '2:' . str_repeat($letter, $allNumbers[1]); } if (isset($allNumbers[2])) { $str[$allNumbers[2]]['letter'] = $letter; $str[$allNumbers[2]]['string'] = '='; // $str[] = '=:' . str_repeat($letter, $allNumbers[2]); } } var_export($str); $res = ''; foreach ($str as $num => $data) { $res .= '/' . $data['string'] . ':' . str_repeat($data['letter'], $num); } return $res; } echo mix("looping is fun but dangerous", "less dangerous than coding");

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
8.3.50.0090.01322.05
8.3.40.0040.01119.03
8.3.30.0080.00818.86
8.3.20.0030.00519.10
8.3.10.0080.00021.90
8.3.00.0040.00421.83
8.2.180.0170.00317.13
8.2.170.0090.00622.96
8.2.160.0140.00020.65
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0040.00419.65
8.2.120.0080.00026.35
8.2.110.0060.00322.27
8.2.100.0080.00318.28
8.2.90.0000.00818.18
8.2.80.0080.00018.00
8.2.70.0000.00818.05
8.2.60.0040.00418.34
8.2.50.0030.00518.13
8.2.40.0030.00519.59
8.2.30.0000.00819.28
8.2.20.0060.00318.23
8.2.10.0040.00418.21
8.2.00.0040.00418.08
8.1.280.0090.00925.92
8.1.270.0050.00323.78
8.1.260.0040.00428.09
8.1.250.0080.00028.09
8.1.240.0040.00423.88
8.1.230.0040.00719.10
8.1.220.0030.00617.91
8.1.210.0080.00018.77
8.1.200.0000.00917.60
8.1.190.0050.00517.48
8.1.180.0060.00318.10
8.1.170.0000.00918.95
8.1.160.0070.00022.24
8.1.150.0080.00019.02
8.1.140.0040.00419.71
8.1.130.0000.00717.84
8.1.120.0000.00717.74
8.1.110.0050.00317.71
8.1.100.0000.00717.57
8.1.90.0040.00417.66
8.1.80.0000.00717.69
8.1.70.0040.00417.69
8.1.60.0060.00317.80
8.1.50.0040.00417.76
8.1.40.0040.00417.64
8.1.30.0040.00417.79
8.1.20.0000.00817.73
8.1.10.0050.00317.78
8.1.00.0000.01117.77
8.0.300.0000.00720.02
8.0.290.0000.00816.84
8.0.280.0050.00218.45
8.0.270.0000.00717.25
8.0.260.0070.00417.35
8.0.250.0030.00317.21
8.0.240.0000.00917.20
8.0.230.0000.00717.16
8.0.220.0070.00017.15
8.0.210.0030.00317.13
8.0.200.0030.00517.20
8.0.190.0000.00717.10
8.0.180.0000.00717.20
8.0.170.0040.00417.20
8.0.160.0030.00517.16
8.0.150.0040.00417.12
8.0.140.0000.00717.02
8.0.130.0000.00613.57
8.0.120.0000.00817.02
8.0.110.0020.00517.16
8.0.100.0080.00016.97
8.0.90.0040.00417.00
8.0.80.0060.00917.14
8.0.70.0040.00417.12
8.0.60.0040.00417.23
8.0.50.0000.00717.07
8.0.30.0070.01017.38
8.0.20.0090.01017.42
8.0.10.0000.00817.26
8.0.00.0140.00816.79
7.4.330.0070.00015.55
7.4.320.0060.00016.88
7.4.300.0030.00316.74
7.4.290.0040.00816.90
7.4.280.0030.00616.77
7.4.270.0030.00316.80
7.4.260.0040.00716.64
7.4.250.0030.00516.76
7.4.240.0040.00416.82
7.4.230.0050.00216.91
7.4.220.0170.01016.73
7.4.210.0000.01616.83
7.4.200.0050.00216.86
7.4.160.0080.01316.84
7.4.150.0060.01217.40
7.4.140.0140.00417.86
7.4.130.0050.01316.75
7.4.120.0090.01016.83
7.4.110.0150.00816.95
7.4.100.0160.00716.60
7.4.90.0100.00716.81
7.4.80.0100.00719.39
7.4.70.0040.01316.89
7.4.60.0140.00416.80
7.4.50.0050.00816.76
7.4.40.0070.01016.79
7.4.30.0000.01716.82
7.4.00.0080.00414.88
7.3.330.0060.00013.44
7.3.320.0000.00613.41
7.3.310.0000.00816.58
7.3.300.0030.00316.55
7.3.290.0070.00816.55
7.3.280.0080.01116.55
7.3.270.0230.01017.40
7.3.260.0130.00416.69
7.3.250.0120.00716.74
7.3.240.0100.01416.88
7.3.230.0140.00316.67
7.3.210.0090.00916.91
7.3.200.0070.01116.64
7.3.190.0060.01016.60
7.3.180.0090.00916.85
7.3.170.0120.00616.51
7.3.160.0140.00316.89
7.2.330.0120.00617.04
7.2.320.0110.00516.99
7.2.310.0100.00716.92
7.2.300.0190.00016.87
7.2.290.0030.01416.92
7.2.60.0030.01316.92
7.2.00.0040.01119.89
7.1.200.0040.00715.99
7.1.100.0030.00918.53
7.1.70.0030.01317.12
7.1.60.0070.00717.54
7.1.50.0030.00917.04
7.1.00.0000.08022.38
7.0.200.0030.01015.15
7.0.120.0130.05320.36
7.0.110.0170.05320.19
7.0.100.0130.05720.20
7.0.90.0030.06720.35
7.0.80.0170.05320.35
7.0.70.0200.05020.38
7.0.60.0100.05720.43
7.0.50.0200.05020.23
7.0.40.0300.05320.29
7.0.30.0300.05020.26
7.0.20.0230.06020.26
7.0.10.0270.05320.30
7.0.00.0330.04720.37
5.6.270.0100.06021.07
5.6.260.0130.05321.06
5.6.250.0230.04321.09
5.6.240.0170.05721.04
5.6.230.0170.05720.82
5.6.220.0200.05020.93
5.6.210.0130.05320.95
5.6.200.0070.06320.96
5.6.190.0200.04721.02
5.6.180.0200.04721.02
5.6.170.0130.05020.83
5.6.160.0000.06321.06
5.6.150.0100.05720.88
5.6.140.0100.05720.86
5.6.130.0130.05320.83
5.6.120.0070.06721.07
5.6.110.0100.06320.94
5.6.100.0200.05020.77
5.6.90.0200.05021.04
5.6.80.0130.05020.46
5.6.70.0100.05720.21
5.6.60.0170.05020.23
5.6.50.0100.05320.46
5.6.40.0130.05020.14
5.6.30.0170.06720.24
5.6.20.0170.06720.40
5.6.10.0030.05720.40
5.6.00.0100.05720.30

preferences:
54.67 ms | 401 KiB | 5 Q