اندازه فایل قبل از ارسال

H

h.p.baxxter

Member
سلام
آیا راهی هست که اندازه فایل رو قبل از آپلود فهمید مثلا کاری کرد که اگه اندازه 100*100 پیکسل نباشه فایل رو اپلود نکنه
 
zoghal

zoghal

Active Member
توضیح نداره دوست من کافیه تو گوگل سرچ کنید انواع روش ها رو پیدا میکنید. این هم دو نمونه
PHP: 
<html>
<head>
<script language="JavaScript">
function A()
{
var oas = new ActiveXObject("Scripting.FileSystemObject");
var d = document.a.b.value;
var e = oas.getFile(d);
var f = e.size;
alert(f + " bytes");
}
</script>
</head>
<body>
<form name="a">
<input type="file" name="b">
<input type="button" name="c" value="SIZE" onClick="A();">
</form>
</body>
</html>

PHP: 
<script language="javascript">
		//BEGIN FROM http://weblogs.macromedia.com/cantrell/archives/2004/06/how_to_implemen.cfm
		var imgRe = /^.+\.(jpg|jpeg|gif|png)$/i;
		function previewImage(pathField, previewName)
		{ 
		var path = pathField.value;
		if (path.search(imgRe) != -1)
		{ 
		document[previewName].src = 'file://'+path;
		//END FROM http://weblogs.macromedia.com/cantrell/archives/2004/06/how_to_implemen.cfm
		
		{
		var img = new Image();
		img.src = 'file://'+path;
		document.write(img.width + ' pixels wide x ' + img.height +' pixels  		high<br>'+ '<img src=' + img.src + '><br>');
		
		}
		
		{
		// BEGIN FROM: http://www.quirksmode.org/js/filesize.html
		var size = (document.fileSize)*1;
		var y = document.images;
		var imglength = 0;
		for (i=0;i<y.length;i++)
		{
		imglength += (y[i].fileSize)*1;
		}
			var total = size + imglength;
		//uncomment the following to return more page info
		//var writestring = 'File size HTML: ' + size;
		//writestring += '\nFile size images: ' + imglength;
		//writestring += '\nTotal file size: ' + total;
		// END FROM: http://www.quirksmode.org/js/filesize.html
		var writestring = 'Image file size: ' + imglength + ' bytes<br>' ;
		if (imglength < 1) writestring += "<b>NOT APPLICABLE: \nFile too large  		for this script.</B><BR>";
		
		//if (total > 40000) writestring += "\nFile too large!" + '<a href="javascript:  		history.go(-1)"><br>RETURN TO PREVIOUS PAGE</a>';
		
		if (imglength > 40000) writestring += "\nFile too large!" + '<a href="javascript:  		history.go(-1)"><br>RETURN TO PREVIOUS PAGE</a>';
		
		//if (total < 40000) writestring += "\nFile size OK." + '<a href="javascript:  		history.go(-1)"><br>RETURN TO PREVIOUS PAGE</a>';
		
		//if (imglength >= 1)writestring += "\nFile size OK." + '<a href="javascript:  		history.go(-1)"><br>RETURN TO PREVIOUS PAGE</a>';
		
		if (((40000 + imglength)<40000)) writestring +="\nFile size not OK." +  		'<a href="javascript: history.go(-1)"><br>RETURN TO PREVIOUS PAGE</a>' ;
		
		if (((40000 + imglength)>40000)) writestring +="\nFile size OK." + '<a  		href="javascript: history.go(-1)"><br>RETURN TO PREVIOUS PAGE</a>' ;
		document.write(writestring);
		
		}
		
		} 
		else 
		{ 
		alert("JPG, PNG, and GIFs only!");
		} 
		}
		</script>
 
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