admin/inc/inc_admin_channel.php

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<?php
/**
 * 获得字段创建信息
 *
 * @access    public
 * @param     string  $dtype  字段类型
 * @param     string  $fieldname  字段名称
 * @param     string  $dfvalue  默认值
 * @param     string  $mxlen  最大字符长度
 * @return    array
 */
function GetFieldMake($dtype, $fieldname, $dfvalue, $mxlen)
{
    $fields = array();
    if($dtype == "int" || $dtype == "datetime")
    {
        if($dfvalue == "" || preg_match("#[^0-9-]#", $dfvalue))
        {
            $dfvalue = 0;
        }
        $fields[0] = " `$fieldname` int(11) NOT NULL default '$dfvalue';";
        $fields[1] = "int(11)";
    }
    else if($dtype == "stepselect")
    {
        if($dfvalue == "" || preg_match("#[^0-9\.-]#", $dfvalue))
        {
            $dfvalue = 0;
        }
        $fields[0] = " `$fieldname` char(20) NOT NULL default '$dfvalue';";
        $fields[1] = "char(20)";
    }
    else if($dtype == "float")
    {
        if($dfvalue == "" || preg_match("#[^0-9\.-]#", $dfvalue))
        {
            $dfvalue = 0;
        }
        $fields[0] = " `$fieldname` float NOT NULL default '$dfvalue';";
        $fields[1] = "float";
    }
    else if($dtype == "img" || $dtype == "media" || $dtype == "addon" || $dtype == "imgfile")
    {
        if(empty($dfvalue)) $dfvalue = '';
        if($mxlen=="") $mxlen = 200;
        if($mxlen > 255) $mxlen = 100;

        $fields[0] = " `$fieldname` varchar($mxlen) NOT NULL default '$dfvalue';";
        $fields[1] = "varchar($mxlen)";
    }
    else if($dtype == "multitext" || $dtype == "htmltext")
    {
        $fields[0] = " `$fieldname` mediumtext;";
        $fields[1] = "mediumtext";
    }
    else if($dtype=="textdata")
    {
        if(empty($dfvalue)) $dfvalue = '';

        $fields[0] = " `$fieldname` varchar(100) NOT NULL default '';";