PHP - Type Handling
Which of the following is the correct way to cast a variable
$var to a boolean in PHP?Which of the following is the correct way to cast a variable $var to a boolean in PHP?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand PHP casting syntax
PHP uses parentheses with the type name before the variable to cast types, e.g., (bool) $var.Step 2: Evaluate each option
(bool) $var uses correct syntax. bool($var) looks like a function call, which is invalid. cast bool $var and D are not valid PHP syntax.Final Answer:
(bool) $var -> Option BQuick Check:
Type casting boolean = (bool) $var [OK]
Quick Trick: Use (type) before variable to cast in PHP [OK]
Common Mistakes:
- Using function-like syntax for casting
- Writing 'as' keyword for casting
- Omitting parentheses
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