PHP函数收藏

　　此中将收藏我在工作中用到的一些PHP函数。有自己写的，也会有网上收集的。此文不断更新中
1.打印数组函数 

function _print($array)
{
    echo ("<pre>");
        print_r($array);
    echo ("</pre>");
}

2.截取字串

function func_chgtitle($str,$len) 
{ 
    if(strlen($str)>$len)
    {
        $tmpstr = "";
        $strlen = $len;
        for($i = 0; $i < $strlen; $i++) 
        {
            if(ord(substr($str, $i, 1)) > 0xa0) 
            {
               $tmpstr .= substr($str, $i, 2);
               $i++;
            } 
            else
               $tmpstr .= substr($str, $i, 1);
        }
        return $tmpstr."";
    }
    else
    {
        return $str;
    }
}

3.加载文件

function loadFile($filepath)
{
    $filecontent = "";
    $fptr = fopen($filepath,"r");
    if ($fptr)
    {
    while ($content = fgets($fptr,4096))
        {
        $filecontent .= $content;
    }
    fclose($fptr);
    }
    return $filecontent;
}

4.下载文件

function downloadFile($path,$fileInfo)
{
    $target_file = $path.$fileInfo['fileid'];
    $file_content = loadFile($target_file);
    header("Content-Disposition: attachment; filename=".$fileInfo['filename']);
    header("Content-type: ".$fileInfo['filetype']);
    header("Content-Length: ".$fileInfo['filesize']);
    echo $file_content;
}

5.数组排序 

/**
* @package     BugFree
* @version     $Id: FunctionsMain.inc.php,v 1.32 2005/09/24 11:38:37 wwccss Exp $
*
*
* Sort an two-dimension array by some level two items use array_multisort() function.
*
* sysSortArray($Array,"Key1","SORT_ASC","SORT_RETULAR","Key2"……)
* @author                      Chunsheng Wang <wwccss@263.net>
* @param  array   $ArrayData   the array to sort.
* @param  string  $KeyName1    the first item to sort by.
* @param  string  $SortOrder1  the order to sort by("SORT_ASC"|"SORT_DESC")
* @param  string  $SortType1   the sort type("SORT_REGULAR"|"SORT_NUMERIC"|"SORT_STRING")
* @return array                sorted array.
*/
    function sysSortArray($ArrayData,$KeyName1,$SortOrder1 = "SORT_ASC",$SortType1 = "SORT_REGULAR")
    {    
        if(!is_array($ArrayData))
        {
            return $ArrayData;
        }
 
        // Get args number.
        $ArgCount = func_num_args();
 
        // Get keys to sort by and put them to SortRule array.
            for($I = 1;$I < $ArgCount;$I ++)
            {
                $Arg = func_get_arg($I);
            if(!eregi("SORT",$Arg))
            {
                $KeyNameList[] = $Arg;
                $SortRule[]    = '$'.$Arg;
               }
            else
            {
                $SortRule[]    = $Arg;
            }
        }
 
        // Get the values according to the keys and put them to array.
            foreach($ArrayData AS $Key => $Info)
        {
            foreach($KeyNameList AS $KeyName)
            {
                ${$KeyName}[$Key] = $Info[$KeyName];
            }
        }    
 
        // Create the eval string and eval it.
        if(count($ArrayData)>0)
        {
            $EvalString = 'array_multisort('.join(",",$SortRule).',$ArrayData);';
            eval ($EvalString);
        }
        return $ArrayData;
    }