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±ÈÈç:
PHP´úÂë:
 
if ($data[$i]['nickname'])
{
    $nickname =  $data[$i]['nickname'];
}
else
{
    $nickname =  $data[$i]['ip'];
}
¿ÉÒÔд³É:
PHP´úÂë:
$nickname =  $data[$i]['nickname'] ? $data[$i]['nickname'] : $data[$i]['ip'];
3.ÉÆÓÚ×éÖ¯if...else...»ØÈ¦
±ÈÈç:
PHP´úÂë:
$ext_name = strtolower(str_replace(".", "", strrchr($upfilename, ".")));
if (!empty($type))
{
    if (!strpos($type, $ext_name))
    {
        echo "Please upload the file of $type form.";
        exit();
    }
}
ÉÏÃæµÄ´úÂëÄãÓ¦¸Ãд³ÉÕâÑù:
PHP´úÂë:$ext_name = strtolower(str_replace(".", "", strrchr($upfilename, ".")));
if (!($type==='') && strpos($type, $ext_name)===false)
{
    echo "Please upload the file of $type form.";
    exit();
}
4.¾¡Á¿ÈÃÄãµÄ´úÂëÇåäÀЩ
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PHP´úÂë:
$foo=$_post["foo"];
$username=$_post["user"];
$group=$_POST["group"];


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class DBConnection {
private $host = "";
private $user = "";
private $pass = "";
private $DBname = "";
public $isConnected = false;
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