<?php
if($flux = simplexml_load_file('fichier.xml'))
{
   $donnee = $flux->channel;
   foreach($donnee->item as $valeur)
   {
      echo '<p>'.date("d/m/Y",strtotime($valeur->pubDate)).' - <a target="_blank" href="'.$valeur->link.'">'.utf8_decode($valeur->title).'</a>';
      echo ''.utf8_decode($valeur->description).'</p>';
   }
}
else {
   echo 'Erreur de lecture du flux RSS';
}
?>

<?php SELECT * FROM  table WHERE nom REGEXP '^A' ?>

<?php SELECT * FROM table WHERE nom LIKE 'A%'; ?>

function resize_clone($path, $file)
{
   list($width, $height, $type, $attr) = getimagesize($path.$file);
   $ratio = $height / $width;
   if ($height > 500 OR $width > 500)
   {
      if($ratio <= 1)
      {
         $x = 500;
         $y = 500*$ratio;
      }
      else
      {
         $y = 500;
         $x = 500*(1/$ratio);
      }
   }
   else
   {
      if($ratio <= 1)
      {
         $x = $width;
         $y = $width*$ratio;
      }
      else
      {
         $y = $height;
         $x = $height*(1/$ratio);
      }
   }
   $size = getimagesize($path.$file);
   if ( $size)
   {
      if ($size['mime']=='image/jpeg' )
      {
         $img_big = imagecreatefromjpeg($path.$file); # On ouvre l'image d'origine
         $img_new = imagecreate($x, $y);
         # création de la miniature
         $img_mini = imagecreatetruecolor($x, $y)
         or   $img_mini = imagecreate($x, $y);
         // copie de l'image, avec le redimensionnement.
         imagecopyresized($img_mini,$img_big,0,0,0,0,$x,$y,$size[0],$size[1]);
         imagejpeg($img_mini,$path."big_".$file );
      }
   }
   if($ratio <= 1)
   {
      $x = 90;
      $y = 90*$ratio;
   }
   else
   {
      $y = 90;
      $x = 90*(1/$ratio);
   }
   
   unlink($path.$file);
}
//////
la boucle :
 $sql = 'SELECT * FROM table WHERE nom="xx"';
 
mysql_query("SET NAMES 'utf8'");
$req = mysql_query($sql);
while($data = mysql_fetch_assoc($req))
{
resize_clone("uploads/", $data['img']);
}
mysql_free_result ($req);