Php Interview Question and Answers

5. What is a PHP File?
 
  • PHP files may contain text, HTML tags and scripts
  • PHP files are returned to the browser as plain HTML
  • PHP files have a file extension of ".php", ".php3", or ".phtml"
 
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6. What is Php?
  PHP is a powerful server-side scripting language for creating dynamic and interactive websites.
 
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7. What is a PHP Filter?
 
  • A PHP filter is used to validate and filter data coming from insecure sources.
  • To test, validate and filter user input or custom data is an important part of any web application.
  • The PHP filter extension is designed to make data filtering easier and quicker.
 
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8. Which are the best start and end tags to use?
  It is largely a matter of preference. For the sake of portability, the standard tags (<?php and ?>) are probably the safest choice. Short tags are enabled by default and have the virtue of brevity, but to promote portability, it might be safest to avoid them.
 
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