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 />}<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 ="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>

http://www.bkjia.com/PHPjc/445558.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/445558.htmlTechArticle$arr=getimagesize(images/album_01.gif); echo $arr[3]; $strarr=explode(,$arr[3]); echo $strarr[1]; ? script function Wa_SetImgAutoSize(img) { //var img=document.all.img1;//获取图片...