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<!DOCTYPE html> <html lang="en"> <head> <title>PHP Convert a Decimal Number to Hexadecimal and Vice Versa</title> </head> <body> <?php // Convert decimal to hexadecimal echo dechex(255) . "<br>"; // 0utputs: ff echo dechex(196) . "<br>"; // 0utputs: c4 echo dechex(0) . "<br>"; // 0utputs: 0 // Convert hexadecimal to decimal echo hexdec('ff') . "<br>"; // 0utputs: 255 echo hexdec('c4') . "<br>"; // 0utputs: 196 echo hexdec(0) . "<br>"; // 0utputs: 0 ?> </body> </html>
