هياكل الحلقات

<?php
$i = 1;
while ($i <= 5) {
    echo "Round {$i}<br>";
    $i++;
}
// Outputs rounds 1 through 5
?>

Initialize → [Check condition] → true → Execute loop body → Update variable → Go back to check
                       ↓ false
                      Exit

<?php
$i = 10;
do {
    echo "Executed!<br>";
    $i++;
} while ($i < 5);
// Even though the condition is false from the start, it still outputs "Executed!" once.
?>

<?php
for ($i = 1; $i <= 5; $i++) {
    echo "Round {$i}<br>";
}
// Outputs 1 through 5
?>

for (initialization; condition; action-after-each-iteration) {
    // loop body
}

<?php
echo "<table border='1'>";
for ($i = 1; $i <= 9; $i++) {
    echo "<tr>";
    for ($j = 1; $j <= $i; $j++) {
        echo "<td>{$j}×{$i}=" . ($i * $j) . "</td>";
    }
    echo "</tr>";
}
echo "</table>";
?>

<?php
// Loop through an indexed array (value only)
$fruits = ["apple", "banana", "orange"];
foreach ($fruits as $fruit) {
    echo "{$fruit}<br>";
}

// Loop through an associative array (key + value)
$user = [
    "name" => "John",
    "age" => 25,
    "city" => "New York"
];
foreach ($user as $key => $value) {
    echo "{$key}: {$value}<br>";
}
// name: John
// age: 25
// city: New York
?>

<?php
// break: stop at 5
for ($i = 1; $i <= 10; $i++) {
    if ($i == 5) {
        break;  // Exit the loop
    }
    echo $i . " ";
}
// Output: 1 2 3 4

// continue: skip 5
for ($i = 1; $i <= 10; $i++) {
    if ($i == 5) {
        continue;  // Skip this iteration
    }
    echo $i . " ";
}
// Output: 1 2 3 4 6 7 8 9 10
?>

<?php
$students = [
    ["name" => "Alice", "score" => 92],
    ["name" => "Bob", "score" => 85],
    ["name" => "Charlie", "score" => 78],
    ["name" => "Diana", "score" => 95],
];
?>

<table border="1">
    <tr>
        <th>Name</th>
        <th>Score</th>
        <th>Grade</th>
    </tr>
    <?php foreach ($students as $s): ?>
    <tr>
        <td><?= $s['name'] ?></td>
        <td><?= $s['score'] ?></td>
        <td>
            <?php if ($s['score'] >= 90): ?>
                🌟 Excellent
            <?php elseif ($s['score'] >= 80): ?>
                👍 Good
            <?php else: ?>
                📚 Keep Trying
            <?php endif; ?>
        </td>
    </tr>
    <?php endforeach; ?>
</table>