(PHP 8 >= 8.3.0)
str_decrement — Decrement an alphanumeric string
$string
): string
Returns the decremented alphanumeric ASCII
string
.
string
The input string.
Returns the decremented alphanumeric ASCII string.
A ValueError is thrown if
string
is empty.
A ValueError is thrown if
string
is not an alphanumeric
ASCII string.
A ValueError is thrown if
string
cannot be decremented.
For example, "A"
or "0"
.
Example #1 Basic str_decrement() example
<?php$str = 'ABC';var_dump(str_decrement($str));?>
The above example will output:
string(3) "ABB"
Example #2 str_decrement() example with a carry
<?php$str = 'ZA';var_dump(str_decrement($str));$str = 'AA';var_dump(str_decrement($str));?>
The above example will output:
string(2) "YZ" string(1) "Z"