Do limit the number of characters that can be passed by GET ($ _GET)?

In mid-1998 was published the HTTP protocol specification, a fairly complete, but inaccurate in the ceiling of the data transferred via GET, so long after the browsers by themselves have released their own specifications .

We emphasize the limits of the most popular:

• Internet Explorer: 2.083 caracteres
• FireFox: 65.536 caracteres
• Safari: 80.000 caracteres
• Opera: 190.000 caracteres

Thus

Depending on the same platform and web server, we must consider other standards, such as for example:

• Apache: 4.000 caracteres
• Microsoft Internet Information

Considering this could easily determine that the data above 2000 characters is preferable to pass POST.

Now, returning to the subject in which I lifted this morning, I commented that it is very common in the lives of professional development due to physical and mental fatigue, in many cases can last for hours solving one problem, otherwise we just take a few minutes.
In this case was no exception

The original code that sends data via GET as follows:

<span onmouseover=”_tipon(this)” onmouseout=”_tipoff()”><span style=”direction: ltr; text-align: left;”>xml.open(‘get’, ‘http://www.webnesbay.com/script.php?variable_get=hello’);</span> xml.open ( ‘get’, ‘http://www.webnesbay.com/script.php?variable_get=hello”);</span>
<span onmouseover=”_tipon(this)” onmouseout=”_tipoff()”><span style=”direction: ltr; text-align: left;”>xml.onreadystatechange = handleResults;</span> xml.onreadystatechange = handleResults;</span>
<span onmouseover=”_tipon(this)” onmouseout=”_tipoff()”><span style=”direction: ltr; text-align: left;”>xml.send(null);</span> xml.send (null);</span>

Now, so we can send data by POST, so we must add a header data, as I do below:

<span onmouseover=“_tipon(this)” onmouseout=“_tipoff()”><span class=“google-src-text” style=“direction: ltr; text-align: left;”>xml.open(‘post’, ‘http://www.webnesbay.com/script.php?variable_get=hola’);</span> xml.open ( ‘post’, ‘http://www.webnesbay.com/script.php?variable_get=hello’);</span>

<span onmouseover=“_tipon(this)” onmouseout=“_tipoff()”><span class=“google-src-text” style=“direction: ltr; text-align: left;”>xml.setRequestHeader(‘Content-Type’, ‘application/x-www-form-urlencoded; charset=ISO-8859-1′);</span> xml.setRequestHeader ( ‘Content-Type’, ‘application / x-www-form-urlencoded; charset = ISO-8859-1′);</span>

<span onmouseover=“_tipon(this)” onmouseout=“_tipoff()”><span class=“google-src-text” style=“direction: ltr; text-align: left;”>xml.send(“variable_post=1&variable_post2=1″);</span> xml.send (variable_post = 1 & variable_post2 = 1 ”);</span>

The problem was that to send data by POST need to send a previously that allows us to store the contents.

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/etc/apache2/conf

The configuration files are then setup with <IfDefine> directives for loading specific modules. You must edit /etc/conf/apache2 to set an environment variable (APACHE2_OPTS) to include the PHP4 directive:

APACHE2_OPTS="-D PHP4"

Note that the APACHE2_OPTS line already exists in /etc/conf/apache2, it just needs to be uncommented and modified to include “-D PHP4″
After you have enabled the PHP4 define you can just restart the web server:

/etc/init.d/apache2 restart

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