Short online courses with certificates : As announced, PHP versions 5.3.5 and 5.2.17 are available to fix the floating-point security gap. A few days before the end of 2010 it was discovered that errors in the way PHP converts some numbers can cause server overload problems.
On 32-bit systems, converting «2.2250738585072011e-308» to a floating point number with the zend_strtod function will result in an infinite repetition and consequently full use of the server CPU.
This weakness could be exploited for a DoS attack. 64-bit systems are not affected because they use another way for this function, in which the error does not occur.
A command line PHP script is available to determine if your system is vulnerable, and for older versions of PHP, which have the same vulnerability, there is a patch for zend_strtod.
🤑 6 Firefox Add-ons for CSS Development Short online courses with certificates ✅ 🤓
Today I will list 5 add-ons for Firefox for those friends or web hosting clients of dnHost who are involved in developing websites with CSS.
So let’s start.
The HTML tab helps you to inspect the elements of the page (inspect elements) and to control their CSS attributes. You can work in CSS code in real time and add, change or delete various elements in HTML.
The «net» tab allows you to see every request sent by browsers to the server that does the web hosting of your site. It will help you to detect server malfunctions or just errors like forgetting some vertical in the url when you call an image or other item.
Download Firebug Short online courses with certificates
2) YSlow (Firebug Add-on)
Firebug can accept the same add-ons as YSlow developed by Yahoo that measures the speed of your website. With YSlow you can find out how to improve the speed of your website or find out what’s wrong if something goes wrong.
💥 Download YSlow Short online courses with certificates 🔥
3) Web Developer Toolbar
The Web Developer Toolbar is also a must have, for any Affiliate, promoting any program.
Ruler that shows the length and height of each element of the website.
Horizontal or vertical line drawing guide to check if your layout is properly aligned.
Check the appearance of a website on different screens.
Local verification and validation of valid HTML and CSS code , done online with the W3C control page.
Install the Web Developer Toolbar
ColorZilla is a tool for working with colors. You have a color picker (eyedropper) that helps you get the color code of any item on your website. With ColorZilla you can:
Handle RGB or HEX colors.
Have a palette to customize or correct colors.
Focus to better mark your target whether it is a very small item (eg text or very small graphics).
Install ColorZilla on your Firefox
Another useful tool that allows you to reload your CSS file without having to reload the HTML. Useful when applying CSS changes to large sites and works with any browser.
6) Dust me selectors
Ever had a huge CSS file that you made so many changes to that you do not even remember? Most selectors will probably no longer be used and Dust-me selectors will check for CSS selectors that are not being used on your pages to delete them.
If you use Reset CSS styles in your code many selectors will be presented as unused. Comment these lines in your CSS file when using the dust-me selectors tool.
😂 Installation of Dust-me Selectors Short online courses with certificates ✨
I will also wait for your suggestions or your opinion on the suggested add-ons.