PHP - Variables and Data Types
What is the output of this PHP code?
$num = -5; echo abs($num);
What is the output of this PHP code?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand abs() function in PHP
abs() returns the absolute value (positive) of a number.Step 2: Apply abs() to -5
abs(-5) returns 5, the positive value.Final Answer:
5 -> Option CQuick Check:
abs() returns positive value = 5 [OK]
Quick Trick: abs() returns positive value of any number. [OK]
Common Mistakes:
- Expecting abs() to return negative number
- Confusing abs() with negation
- Thinking abs() causes errors on negatives
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