Helper Functions

When to Apply

• When transforming arrays, strings, or iterables in Laravel application code.
• When refactoring native PHP utility code to improve readability and consistency.
• When chaining multiple transformations on text or data collections.

When NOT to Apply

• When no Laravel equivalent exists and native PHP is clearer.
• In tight low-level loops where collection wrapping would add unnecessary overhead.
• In framework-agnostic packages that should not depend on Laravel helpers.

Preconditions

• Import Illuminate\Support\Arr for array helpers.
• Import Illuminate\Support\Str for string helpers.
• Use collect() only when collection operations improve clarity.

Process

1. Identify native PHP helper usage (array_*, str_*, manual loops).
2. Replace with Arr::, Str::, or Collection methods where a direct equivalent exists.
3. Keep behavior identical (defaults, key handling, casing, null handling).
4. Prefer fluent chains (Str::of(), collections) for multi-step transformations.
5. Re-run tests/static analysis for the touched scope.

Examples

use Illuminate\Support\Arr;
use Illuminate\Support\Str;

// Arrays
$city = Arr::get($payload, 'user.address.city', 'Unknown');
$safe = Arr::except($payload, ['password', 'token']);

// Strings
$slug = Str::of($title)->trim()->lower()->slug();

// Collections
$adminEmails = collect($users)
    ->filter(fn (User $user) => $user->isAdmin())
    ->pluck('email')
    ->values();

Anti-Patterns

• Mixing native array_*/str_* calls with Laravel helpers in the same transformation flow.
• Replacing simple one-liners with collection chains that reduce readability.
• Omitting use imports and relying on fully qualified class names repeatedly.
• Rewriting code when no Laravel helper exists and native PHP is already explicit.

References

• Laravel Arr Helper
• Laravel Str Helper
• Laravel Collections