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php 获取图片尺寸

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2016-06-08 17:32:39976browse
<script>ec(2);</script>

 

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


演示图片等比例缩小
<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 /> if(img.offsetWidth>MaxWidth){ <br /> img.width=MaxWidth; <br /> img.height=MaxWidth*HeightWidth; <br /> } <br /> if(img.offsetHeight>MaxHeight){ <br /> img.height=MaxHeight; <br /> img.width=MaxHeight*WidthHeight; <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+="r高度超额:"+img.offsetHeight;<br /> if(img.offsetWidth>MaxWidth) message+="r宽度超额:"+img.offsetWidth;<br /> if(message!="") alert(message);<br /> } <br /> </script>


php 获取图片尺寸





 
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