hexdec():hexadecimal equivalent of decimal number

string hexdec(string $hex);
$hexRequired : $hex string to convert to equivalent decimal number.
The output is decimal number.
Hexadecimal is positional numeral system with base of 16. The chars it used are from 0 to 9 and from A to F.

Example : hexadecimal to decimal

echo hexdec('2e'); // Output 46 
echo "<br>";
echo hexdec('2ch'); // Output 44 
echo "<br>";
echo hexdec('fab'); // Output is 4011
echo "<br>";
echo hexdec('FFFFFF'); // Output is 16777215

Checking Hexadecimal inputs

Before using hexdec() to convert hexadecimal to decimal system, we can check hexadecimal input string for a valid hexadecimal number or not by using ctype_xdigit.php function.

Here is Demo of checking and converting Hexadecimal input to decimal base number.



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