Learning JavaScript from PHP - a Comparison

This is a basic comparison between PHP and JavaScript. It's intended for users familiar with PHP and looking for JavaScript equivalents.

JavaScript and PHP Comparisons:

• Variables
  • Scope
  • Types
  • Casting
  • NULL and empty() values
  • Booleans
  • Case Sensitivity
  • Dumping variables
• Objects and Arrays
  • Declaration
  • Syntax
  • Associative Arrays
• Control Structures
  • for() loop
  • foreach() loop

Variables
Variable Scope

PHP and JavaScript take two very different approaches to declaring variables. In PHP, all variables are local in scope unless declared as global. JavaScript is opposite, and all variables are global unless declared with the var keyword.

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