PHP - Variables and Data Types
What will be the output of this PHP code?
$value = 1.23456789;
echo round($value, 4);
What will be the output of this PHP code?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the round function with 4 decimals
round() rounds the number to the nearest value at 4 decimal places.Step 2: Round 1.23456789 to 4 decimals
1.23456789 rounds up to 1.2346 because the 5th decimal is 6 (>=5).Final Answer:
1.2346 -> Option AQuick Check:
round to 4 decimals = B [OK]
Quick Trick: round() rounds up if next digit >=5 [OK]
Common Mistakes:
- Truncating instead of rounding
- Rounding down incorrectly
- Confusing decimal places
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