PHP Break and Continue

break exits the nearest loop or switch, while continue skips to a later iteration.

What It Does

break exits the nearest loop or switch, while continue skips to a later iteration. The following examples distinguish a normal use case, a boundary case and a practical application.

Requirements and Compatibility

PHP 8.x and a local test environment. Apply input validation, correct error handling and the requirements of any optional libraries.

The code focuses on the core concept. Production implementation may also need routes, validation, persistence, authorization or deployment tooling.

Example 1: Basic Behavior

Start with the smallest meaningful working case.

<?php
for ($n = 1; $n <= 10; $n++) { if ($n === 4) break; echo $n . ' '; }

Example 2: Another Case

Examine the edge case and the observable result.

<?php
foreach ([1, -3, 5, 0, 8] as $value) { if ($value <= 0) continue; echo $value . ' '; }

Practical Example: Putting It to Use

Apply the technique to a small practical task.

<?php
foreach (['alpha', 'skip', 'omega'] as $row) { if ($row === 'skip') continue; echo strtoupper($row) . ' '; }

Important Behavior and Edge Cases

continue in a switch has special semantics; choose explicit loop levels when nested.

Comparison with Related Functions or Approaches

Common Beginner Mistakes

Key Takeaways

• break exits the nearest loop or switch, while continue skips to a later iteration.
• continue in a switch has special semantics; choose explicit loop levels when nested.
• Use return to leave a function entirely.

Before adapting these examples, verify the return values, test the failure paths and confirm that your application meets its security and environment requirements.