function resizeimage($srcfile,$mySize){           $size=getimagesize($srcfile);           switch($size[2]){               case 1:                   $img=imagecreatefromgif($srcfile);                   break;               case 2:                   $img=imagecreatefromjpeg($srcfile);                   break;               case 3:                   $img=imagecreatefrompng($srcfile);                   break;           }    //源图片的宽度和高度           $oldImg['w']=imagesx($img);           $oldImg['h']=imagesy($img);           if ($oldImg['w']<=$mySize['w'] && $oldImg['h']<156){               $rate=1;           }elseif ($oldImg['w']>$mySize['w'] && $oldImg['h']<$mySize['h']){               $rate=$mySize['w']/$oldImg['w'];           }elseif ($oldImg['w']<$mySize['w'] && $oldImg['h']>$mySize['h']){               $rate=$mySize['h']/$oldImg['h'];           }elseif ($oldImg['w']>$mySize['w'] && $oldImg['h']>$mySize['h']){               $rate1=$mySize['w']/$oldImg['w'];               $rate2=$mySize['h']/$oldImg['h'];               if ($rate1>$rate2){$rate=$rate2;}else{$rate=$rate1;}           }           $newImg['w']=$oldImg['w']*$rate;           $newImg['h']=$oldImg['h']*$rate;           return "width=".$newImg['w']." height=".$newImg['h'];       } 

$mySize=array('w'=>143,'h'=>156);  $imgSize=resizeimage("22.jpg",$mySize);  echo "<img src=\"22.jpg\"".resizeimage("22.jpg",$mySize)."/>";