What is the output of the following code snippet?$a = 0123; echo $a;

Explanation

In PHP, an integer literal starting with a leading zero is interpreted as an octal (base-8) number. The octal value 0123 is calculated as (1 * 8^2) + (2 * 8^1) + (3 * 8^0), which equals 64 + 16 + 3 = 83. Option A assumes decimal notation, while C ignores the octal conversion rule.

Key points

Leading zeros trigger octal interpretation
Octal digits are restricted to 0-7
Integer literals are base-10 by default

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