Definition and Usage
The octdec() function is used to convert an octal number to decimal number equivalent. The function takes a string with octal representation as argument and retuns an integer.
For example octdec('10') returns 8.
Syntax
octdec ( string $octal_string ) : number
Parameters
| Sr.No | Parameter & Description |
|---|---|
| 1 | octal_string A string containing the octal number to be converted |
Return Values
PHP octdec() function returns a decimal equivalent of given octal representation.
PHP Version
This function is available in PHP versions 4.x, PHP 5.x as well as PHP 7.x.
Example
Following example converts '10' from octal to decimal number system. −
<?php
$arg='10';
$val=octdec($arg);
echo "octdec(" . $arg . ") = " . $val;
?>Output
This will produce following result −
octdec(10) = 8
Example
If there is Any character other than octal digit (other than 0 - 7) in the string, it is ignored. In following example '#' is ignored and rest of string is converted to decimal −
<?php
$arg='23#4';
$val=octdec($arg);
echo "octdec(" . $arg . ") = " . $val;
?>Output
This will produce following result −
octdec(234) = 156
Example
If all characters are other than octal digits, the functon returns 0−
<?php
$arg='Hello';
$val=octdec($arg);
echo "octdec(" . $arg . ") = " . $val;
?>Output
This will produce following result −
octdec(Hello) = 0
Example
The octdec() function treats the octal number inside the argument string as unsigned integer
<?php
$arg='-20';
$val=octdec($arg);
echo "octdec(" . $arg . ") = " . $val;
?>Output
This will produce following result −
octdec(-20) = 16