Decrement character with php

Question

Why is it that it\'s ok to increment character but not decrement with PHP?

PHP

Answer 1

As chris85 mentioned: "Character variables can be incremented but not decremented"

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PHP supports C-style pre- and post-increment and decrement operators.

Incrementing/Decrementing Operators

1. ++$a Pre-increment Increments $a by one, then returns $a.
2. $a++ Post-increment Returns $a, then increments $a by one.
3. --$a Pre-decrement Decrements $a by one, then returns $a.
4. $a-- Post-decrement Returns $a, then decrements $a by one.

Note: The increment/decrement operators only affect numbers and strings. Arrays, objects and resources are not affected. Decrementing NULL values has no effect too, but incrementing them results in 1.

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SRC: http://php.net/manual/en/language.operators.increment.php