Required : $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.
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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