Category Archives: Programming

Material related to computer programming.

HTML5 and CSS positioning

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36

I stumbled across a weird bug today that I didn’t know about and wasn’t expecting. I’d done a little bit of a CSS file to go with a little bit of HTML that did some simple positioning of content. Then I validated my document on the W3C Markup Validation Service and it complained about a missing doctype. So I added a doctype for HTML5. After I did that my page looked all screwy, the CSS positioning was applying correctly. Anyway it turned out that the reason the CSS wasn’t applying was because I had property specifications like this:

#content {
  margin: 170 50 50 50;
  padding: 0;
}

Whereas I needed to specify the units, like this:

#content {
  margin: 170px 50px 50px 50px;
  padding: 0px;
}

Internet explorer support for file URIs

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1

The URI file://bender-xp/C$/ works in an anchor tag in IE8 to open the \\bender-xp\C$ file share on my network. In this case bender-xp was the name of my local machine but it works for remote file shares too (I tested it to a Samba share on another box).

Unfortunately my version of Firefox (version 9.0.1) doesn’t support this.

File upload error – unable to create a temporary file in Unknown on line 0

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38

I was working with phpMyAdmin and I got the following error:

 File upload error - unable to create a temporary file in Unknown on line 0

The problem was that the upload_tmp_dir setting in my php.ini file was specified twice. Once up the top of the file where I was editing it, and then later in the file where I didn’t see it. So the setting I wanted wasn’t being applied. If you get this error double check you’ve only got one setting for upload_tmp_dir.