I needed to generate a random string in php that did not repeat. This little snippet will generate a random non-repeating 32 character string.
// Generate random 32 character string
$string = md5(time());
Monthly Archives: February 2008
IE 6 javascript onchange() problem
I really hate IE6, but as it is still so common it is important to support it. I recently ran into a problem with the javascript onchange function. I was using onchange to update a text box on the page when the check box was selected. I was using “…onchange(this.checked)…” This worked fine for everything except IE6. It turns out that IE doesn’t fire the onchange state until the checkbox loses focus and so my update was not occurring.
The simple way around for this problem was to change onchange() to onclick(). The function now works in all browsers.
PHP number_format function problem
I have been using the php number_function() to format currency values in my code and was recently caught by the thousand separator comma. If you use the function and just specify the the number of decimal places (ie $x = number_format ($y,2) ) then you will get a comma introduced for all numbers above 999.99. This comma will break any maths functions that you might use downstream.
The solution is to specify the decimal point but remove the comma. The format to use to achieve this is $x = $number_format ($y,2,”.”,””) – the empty double quotes tell the number format function to not include the thousand separator comma.