Which of the following is the correct syntax to cast a variable $value to a float in PHP?

easy📝 Syntax Q12 of 15

PHP - Type Handling

Which of the following is the correct syntax to cast a variable $value to a float in PHP?

A$floatValue = (float) $value;

B$floatValue = cast float $value;

C$floatValue = float($value);

D$floatValue = (float)$value[];

Step-by-Step Solution

Solution:

Step 1: Recall PHP type casting syntax
PHP uses (type) before a variable to cast it, so (float) $value is correct.
Step 2: Check each option
$floatValue = float($value); uses a function-like syntax which is invalid. $floatValue = cast float $value; uses invalid syntax. $floatValue = (float)$value[]; tries to cast an array element incorrectly.
Final Answer:
$floatValue = (float) $value; -> Option A
Quick Check:
Correct cast syntax is (float) $value [OK]

Quick Trick: Use (type) before variable for casting in PHP [OK]

Common Mistakes:

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