hex2bin Decodes a hexadecimally encoded binary string &reftitle.description; stringhex2bin stringdata Decodes a hexadecimally encoded binary string. This function does NOT convert a hexadecimal number to a binary number. This can be done using the base_convert function. &reftitle.parameters; data Hexadecimal representation of data. &reftitle.returnvalues; Returns the binary representation of the given data &return.falseforfailure;. &reftitle.errors; If the hexadecimal input string is of odd length or invalid hexadecimal string an E_WARNING level error is thrown. &reftitle.changelog; &Version; &Description; 5.5.1 A warning is thrown if the input string is invalid hexadecimal string. 5.4.4 A warning is thrown if the input string is of odd length. In PHP 5.4.0 the string was silently accepted, but the last byte was truncated. &reftitle.examples; ]]> &example.outputs.similar; &reftitle.seealso; bin2hex unpack