PHP - Conditional Statements
What will be the output of this PHP code?
$x = 0;
echo $x ?? 10;
What will be the output of this PHP code?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand null coalescing with zero value
The variable $x is set and equals 0, which is not null.Step 2: Evaluate the expression
Since $x is not null,$x ?? 10returns 0.Final Answer:
0 -> Option BQuick Check:
Null coalescing checks for null, not falsy values [OK]
Quick Trick: Null coalescing treats 0 as valid, not null [OK]
Common Mistakes:
- Confusing null with falsy zero
- Expecting default value for 0
- Thinking it causes error
Master "Conditional Statements" in PHP
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