[Solved] What will be the output of this PHP code?$str = '12 bananas';$num = 8;$result = $str - $num;echo $result; | PHP

PHP - Variables and Data Types

What will be the output of this PHP code?

$str = '12 bananas';
$num = 8;
$result = $str - $num;
echo $result;

AError: unsupported operand types

B20

C12 bananas8

D4

Step-by-Step Solution

Solution:

Step 1: Understand PHP type juggling
PHP converts strings to numbers when used with arithmetic operators, parsing from the start until a non-numeric character.
Step 2: Convert '12 bananas' to integer
PHP reads '12' and stops at the space, so '12 bananas' becomes 12.
Step 3: Perform subtraction
12 - 8 equals 4.
Final Answer:
4 -> Option D
Quick Check:
Arithmetic with numeric strings converts them to numbers [OK]

Quick Trick: Strings convert to numbers until non-digit [OK]

Common Mistakes:

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