[TIL] php 뽀개기-1

1. 현재 경로 위치 확인

$currentPath = getcwd();
echo "현재 위치: " . $currentPath;

2. k번째 약수

Code-1

<?php
$input_result = function ($path) {
    $file = fopen($path, "r");
    $line = fgets($file);
    fclose($file);
    return array_map('intval', explode(' ', $line));
};

$output_result = function ($path) {
    $file = fopen($path, "r");
    $line = fgets($file);
    fclose($file);
    return intval(trim($line));
};

$kth_divisor = function ($n, $k) {
    $cnt = 0;
    for ($i = 1; $i <= $n; $i++) {
        if ($n % $i == 0) {
            $cnt++;
        }
        if ($cnt == $k) {
            return $i;
        }
    }
    echo "return false" . "\n";
    return false;
};

$test_kth_divisor = function () use ($input_result, $output_result, $kth_divisor) {
    $COMMON_PATH = "inflearn/python/섹션 2/1. k번째 약수/";
    $INPUT_PATH = "./" . $COMMON_PATH . "in1.txt";
    $OUTPUT_PATH = "./" . $COMMON_PATH . "out1.txt";

    list($n, $k) = $input_result($INPUT_PATH);
    $expected = $output_result($OUTPUT_PATH);
    assert($kth_divisor($n, $k) === $expected);
    
};

$test_kth_divisor();
echo "Test Pass";
?>

Code-2

<?php
class KthDivisorTest
{
    private static $COMMON_PATH;
    private static $numTestCases;

    public function __construct()
    {
        self::$COMMON_PATH = "inflearn/python/섹션 2/1. k번째 약수/";
        self::$numTestCases = 5;
    }

    private function readInput($path)
    {
        $file = fopen($path, "r");
        $line = fgets($file);
        fclose($file);
        return array_map('intval', explode(' ', $line));
    }

    private function readOutput($path)
    {
        $file = fopen($path, "r");
        $line = fgets($file);
        fclose($file);
        return intval(trim($line));
    }

    private function kthDivisor($n, $k)
    {
        $cnt = 0;
        for ($i = 1; $i <= $n; $i++) {
            if ($n % $i == 0) {
                $cnt++;
            }
            if ($cnt == $k) {
                return $i;
            }
        }
        return -1;
    }

    private function runTestCases()
    {
        for ($i = 1; $i <= self::$numTestCases; $i++) {
            $inputPath = "./" . self::$COMMON_PATH . "in$i.txt";
            $outputPath = "./" . self::$COMMON_PATH . "out$i.txt";

            $input = $this->readInput($inputPath);
            $expected = $this->readOutput($outputPath);
            $n = $input[0];
            $k = $input[1];

            $result = $this->kthDivisor($n, $k);
            assert($result === $expected, "Test case $i failed. n=$n, k=$k, expected=$expected");
        }
    }

    public function testKthDivisor()
    {
        $this->runTestCases();
    }
}

$test = new KthDivisorTest();
$test->testKthDivisor();

?>

isset함수

define('ENVIRONMENT', isset($_SERVER['CI_ENV']) ? $_SERVER['CI_ENV'] : 'production');