===== Syntax =====

<code php>string bin2hex(int $val)</code>

//(PHP 4, PHP 5)//

^ $val | The integer (long) number to convert to hexadecimal |
^ RETURNS | Returns a hexadecimal string converted from the argument |

===== What it Does =====

Converts binary data into a hexadecimal string equivalent.  Hexadecimal is a base 16 numbering system with digits from ''0 - 9 A - F''.  The number ''31'' in hexadecimal would be ''1F'' which is sometimes represented as ''0x1F'' or ''1FH''.

===== Example =====

<code php>
echo bin2hex(31);
</code>

Outputs:

<code>
1f
</code>