PHP Developer Interview Questions

Working on a PHP project and require an adroit developer? Identify the most competent PHP developer by asking this carefully curated interview questions and leverage this open source scripting language to the fullest.



PHP Developer Interview Questions

With the internet transforming the business landscape at an exponential speed; taking the business online has become a universal norm. Now, when it comes to developing a website, PHP is the most admired language and a preferred choice for many. As such, the right PHP Developer, who is skilled as well as experienced is undoubtedly a valuable asset for any business.

An individual with adequate technical knowledge, strong understanding of customer requirements and the ability to formulate his own development strategy will prove incredibly efficient. Creativity and ability to innovate are some other measures of an ideal programmer, which will ensure that you get out-of-the-box solutions for your PHP project requirements. Awareness of latest advancements in the field of PHP programming is also a must.

Qualifications to look for:

  • Bachelor’s degree in Computer Science

Skills to look for:

  • Experience with various frameworks like CakePHP, Zend, CodeIgniter
  • Know-how on how the business works
  • Ability to adapt
  • Strong mathematical, logical and analytical skills
  • Effective communication skills and a good team player

A proficient PHP Developer can be easily identified if you ask the right questions. Following PHP Developer interview questions will help you evaluate the potential of each candidate and recruit the one who stands out in the crowd.

Computer Science questions

  • What does PEAR mean in PHP?
  • Explain the difference between PHP constants and variables.
  • Differentiate between array_combine and array_merge?
  • Explain str_replace().
  • When is var_dump used?
  • How interface differs from an abstract class?
  • Explain .htacces file.

Job-Specific questions

  • Mention some error types that you have faced and also explain how did you fix them.
  • Which troubleshooting process do you follow when a program does not run properly?
  • Which method will you follow to generate random numbers in PHP?
  • How will you set the cookies on your website?
  • Are you familiar with SQL? How can we create a MySql database using PHP?
  • Do you have experience with open source projects such as Drupal, Joomla or osCommerce?
  • Share a couple of your favorite PHP design patterns.
  • How can Javascript, AJAX, HTML or CSS help you when designing a web application?
  • Give examples of best design and coding practices?
  • Behavioral questions
  • Can you tell any fun project that you have worked on recently?
  • How do you stay up to date with the latest programming trends?
  • If you could attend any tech seminar then which one would you prefer and why?
  • Recall a time when you worked together with developers and engineers to complete a project. What was your contribution to the team?

Behavioral questions

  • Share your favorite PHP project so far.
  • How do you stay up-to-date with the latest programming trends?
  • If you could attend any tech seminar then which one would you prefer and why?
  • Recall a time when you worked together with developers and engineers to complete a project. What was your contribution to the team?