用PHP或JS获取图片大小,高宽尺寸_PHP教程

$arr=getimagesize("images/album_01.gif");
echo $arr[3];
$strarr=explode(""",$arr[3]);
echo $strarr[1];
?>

<script><br /> function Wa_SetImgAutoSize(img)<br /> {<br /> //var img=document.all.img1;//获取图片<br /> var MaxWidth=200;//设置图片宽度界限<br /> var MaxHeight=100;//设置图片高度界限<br /> var HeightWidth=img.offsetHeight/img.offsetWidth;//设置高宽比<br /> var WidthHeight=img.offsetWidth/img.offsetHeight;//设置宽高比<br /> alert("test" img.offsetHeight img.fileSize);<br /> if(img.offsetHeight>1) alert(img.offsetHeight);<br /> if(img.readyState!="complete"){<br /> return false;//确保图片完全加载<br /> }<br /> <br /> if(img.offsetWidth>MaxWidth){<br /> img.width=MaxWidth;<br /> img.height=MaxWidth*HeightWidth;<br /> if(img.offsetHeight>MaxHeight){<br /> img.height=MaxHeight;<br /> img.width=MaxHeight*WidthHeight;<br /> }<br /> }<br /> <br /> function CheckImg(img)<br /> {<br /> var message="";<br /> var MaxWidth=1;//设置图片宽度界限<br /> var MaxHeight=1;//设置图片高度界限<br /> <br /> if(img.readyState!="complete"){<br /> return false;//确保图片完全加载<br /> }<br /> if(img.offsetHeight>MaxHeight) message =" 高度超额：" img.offsetHeight;<br /> if(img.offsetWidth>MaxWidth) message =" 宽度超额：" img.offsetWidth;<br /> if(message!="") alert(message);<br /> }<br /> </script>

http://www.bkjia.com/PHPjc/631976.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/631976.htmlTechArticle? $arr=getimagesize(images/album_01.gif); echo $arr[3]; $strarr=explode(,$arr[3]); echo $strarr[1]; ? HTML HEAD TITLE演示图片等比例缩小/TITLE script function Wa_SetImgAuto...