PHP - Arrays
What will be the output of the following PHP code?
$arr = [5, 10, 15];
$arr[1] = $arr[1] + 5;
echo $arr[1];
What will be the output of the following PHP code?
medium📝 Predict Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand initial array values
$arr = [5, 10, 15]; so $arr[1] is 10.Step 2: Calculate new value of $arr[1]
$arr[1] = $arr[1] + 5 means 10 + 5 = 15.Final Answer:
15 -> Option AQuick Check:
10 + 5 = 15 [OK]
Quick Trick: Add to existing value using $arr[index] + number [OK]
Common Mistakes:
- Printing old value without update
- Adding index instead of value
- Confusing array indexes
Master "Arrays" in PHP
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