CoEnterprise Interview Questions and Answers

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Q1. What is international format to store dates in PHP? How to access it?

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The international format to store dates in PHP is 'Y-m-d H:i:s'. It can be accessed using the date() function.

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Jobs are individual tasks that are executed independently, while batches are groups of tasks executed together.

Jobs are typically smaller in scope and run independently, while batches involve multiple tasks grouped together.
Jobs can be queued and processed asynchronously, while batches are usually executed synchronously.
Examples of jobs include sending an email, processing an image, or updating a database record. Examples of batches include importing a CSV file, running a ser...read more

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Polymorphic relationship is a type of relationship in which a model can belong to multiple other models on a single association.

Allows a model to belong to multiple other models on a single association
Uses a single column in the database to store the type of the related model
Commonly used in scenarios where a model can belong to multiple other models such as comments, likes, or tags

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Traits are used in PHP to group functionality in a fine-grained and reusable way.

Traits allow you to reuse methods in multiple classes without inheritance limitations.
They provide a way to compose classes that is more flexible than single inheritance.
Traits can be used to share methods among classes that are unrelated in terms of inheritance.
An example of using traits in Laravel is the 'SoftDeletes' trait which adds soft deletion capabilities to models.

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Observers in Laravel are classes that listen for specific model events and trigger actions based on those events.

Observers are used to decouple event listeners from models.
They can listen for various model events like creating, updating, deleting, etc.
Observers are defined by creating a class that extends the Eloquent model observer class.
Example: Creating a UserObserver class to send an email notification when a new user is created.

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Accessors and mutators are methods used in Laravel Eloquent models to manipulate attribute values before retrieving or saving them.

Accessors are used to modify attribute values when retrieving them from the database
Mutators are used to modify attribute values before saving them to the database
Accessors and mutators are defined as methods in the Eloquent model class
Example: public function getFullNameAttribute() { return $this->first_name . ' ' . $this->last_name; }