# Convert decimal to binary, octal, and hexadecimal digits to zero

Source: Internet
Author: User

<? Php Tutorial
/**
* Convert decimal to binary, octal, or hexadecimal with zero padding before the digits being insufficient *
*
* @ Param array \$ datalist input data array (100,123,130)
* @ Param int \$ bin conversion can be: 2, 8, 16
* @ Return array returns the data array () and returns the format in which no data is converted.
* @ Copyright chengmo qq: 8292669
*/
Function decto_bin (\$ datalist, \$ bin)
{
Static \$ arr = array (, 'A', 'B', 'C', 'D', 'e ', 'F ');
If (! Is_array (\$ datalist) \$ datalist = array (\$ datalist );
If (\$ bin = 10) return \$ datalist; // ignore in the same hexadecimal format
\$ Bytelen = ceil (16/\$ bin); // Obtain the length of a byte in \$ bin notation.
\$ Aoutchar = array ();
Foreach (\$ datalist as \$ num)
{
\$ T = "";
\$ Num = intval (\$ num );
If (\$ num = 0) continue;
While (\$ num> 0)
{
\$ T = \$ arr [\$ num % \$ bin]. \$ t;
\$ Num = floor (\$ num/\$ bin );
}
\$ Tlen = strlen (\$ t );
If (\$ tlen % \$ bytelen! = 0)
{
\$ Pad_len = \$ bytelen-\$ tlen % \$ bytelen;
\$ T = str_pad ("", \$ pad_len, "0", str_pad_left). \$ t; // The length of less than one byte is automatically increased to 0.
}
\$ Aoutchar [] = \$ t;
}
Return \$ aoutchar;
}

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