PHP - Arrays
What will this PHP code output?
$numbers = [10, 20, 30];
$numbers[] = 40;
echo count($numbers);
What will this PHP code output?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand adding elements to arrays
$numbers[] = 40 adds 40 to the end of the array, increasing its size.Step 2: Use count() to get array length
Original array has 3 elements, after adding one, count is 4.Final Answer:
4 -> Option BQuick Check:
Array length after add = 4 = C [OK]
Quick Trick: Adding with [] appends to array [OK]
Common Mistakes:
- Thinking count stays same after adding
- Expecting error when adding element
- Confusing count() with sum
Master "Arrays" in PHP
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