Install Zend Framework on Shared hosting server

If your site is hosted on Shared Server and you want to use Zend library on your project.

 

For Dedicated server, you have full root access and can have remote or full putty access of your server, you can install/uninstall any library as well as software in the server.
The same will be done by Server Guy on your request.

 

But, in this case “Shared hosting”, you should handle these either by using .htaccess file or by overriding the php.ini file, let see how you can do this.

 

If you need to install Zend framework what you should do is.

 

1. Check the document root path of your server.Use phpinfo(); php function for check.

[php]
<?php
echo phpinfo();
?>
[/php]

The below is the sreengrab of my local system, the path will be different for your server.

XAMPP_Document_Root_PATH_PHPinfo

 

 

2. Upload Zend library into your hosting server (path : root/library/Zend)

 

3. Create or update your php5.ini (If you are using php5, use php5.ini file) or php.ini file.

put this line, (If you already have, add this line end of the current set, connected with ‘:’)

include_path = [DOCUMENT_ROOT]/Zend Libraray Path

ex) include_path = /home/scriptarticle/public_html/library

 

It’s Done !!

Now test whether the zend installed well or not, let’s echo the Zend frame work version.

 

[php]
<?php
require_once ‘Zend/Version.php’;
echo ‘Zend Framework Version : ‘ . Zend_Version::VERSION;
?>
[/php]

 

If you see your Zend version, that means your Zend framework has been installed successfully!

 

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How to prevent gaps/holes in a MySQL table AUTO_INCREMENT Primary Key field

Prevent gaps/holes in a MySQL table AUTO_INCREMENT Primary Key field.

 

Generally during the MySQL database development you create tables with a Primary Key, a very simple way to create a primary key is make it Auto-increment and unsigned integer with Not Null property right?

 

I think most of you generally follow the above process. Suppose you are playing a very large database and have a very large number of Ids, I know this is rarely happens but you should aware this one, you might face an issue where the new row insertion will through error.

 

Have a look on MySQL data type and their range

 

INT – A normal-sized integer that can be signed or unsigned.
– If signed, the allowable range is from -2147483648 to 2147483647.
– If unsigned, the allowable range is from 0 to 4294967295.
– Max allowed length is 11 digits.

 

TINYINT – A very small integer that can be signed or unsigned.
– If signed, the allowable range is from -128 to 127.
– If unsigned, the allowable range is from 0 to 255.
– Max allowed length is 4 digits.

 

SMALLINT – A small integer that can be signed or unsigned.
– If signed, the allowable range is from -32768 to 32767.
– If unsigned, the allowable range is from 0 to 65535.
– Max allowed length is 5 digits.

 

MEDIUMINT – A medium-sized integer that can be signed or unsigned.
– If signed, the allowable range is from -8388608 to 8388607.
– If unsigned, the allowable range is from 0 to 16777215.
– Max allowed length is 9 digits.

 

BIGINT – A large integer that can be signed or unsigned.
– If signed, the allowable range is from -9223372036854775808 to 9223372036854775807.

– If unsigned, the allowable range is from 0 to 18446744073709551615.
– Max allowed length is 20 digits.

 

Let a suppose you have specified your primary key as INT so the max number you can enter with in it is 4294967295 (if unsigned),
Yes it is not a small number and will not reach generally but if the system allow deletion of records/data on daily basis then what will happen, one day a new row will not insert and it will reach a max limit as you know once a row deleted that id will not use any more and you will have a lot of holes/gaps in the id that was not used.

 

I think you have got what I want to say. You have a table named as student with simply 2 columns
id and name and your table data are

 

1 student1
2 student2
3 student3
.. ..
20 student 20

 

Now you have deleted 2 and 3 id’s records then these id will never user by auto-increment id (primary key), you can use these id but you should know which id is not used and how to fetch this automatically, it will very hard to find if there are lot of rows.

 

How to fill or use this id or holes or gaps automatically.
Use the below query to insert the id instead of use this automatically. It will return NULL if no gap/hole is there in the primary key.

 

[php]

SELECT MIN(st1.id+1)
FROM student st1
LEFT JOIN student st2 ON st2.id = st1.id + 1
WHERE st2.id IS NULL

[/php]

The above query returns you an id that can be used to insert the new row.

There are some most important note you should take care before using these.

 

You should not have values (id) on other tables associated (as a foreign key) with the deleted primary key. If this happen your rest of life will not fine. You should take care that when you insert a new entry with primary key that was taken from the gap, the gaped value should not be there in the associated tables.

You should clean ALL of your tables when you delete a primary key.

 

PHP short_open_tag = On should not be used

After a fresh installation you could find that PHP short_open_tag disabled by default in php.ini file.

 

You can check by using phpinfo() PHP function.

Under PHP Core setting you can find as below

 

Directive Local Value Master Value
short_open_tag Off Off

 

If “short_open_tag” is found off in your php.ini file then you cannot use short form (<? ?>) of PHP’s open tag and you must use long form of PHP tags (<?php ?>) instead, otherwise any PHP code inside these tags will not be parsed as PHP.

 

Drawback of PHP short_open_tag if you have enabled.

 

1) Setting this value to off allows for easier use alongside XML by providing the ability to use <?xml ?> inline without having to print it with PHP echo ‘<?xml version=”1.0″?>’; ?>.

 

With the wide spread use of XML(SOAP, XMLRPC, REST-XML) and use of these tags by other languages, the server can become easily confused and end up parsing the wrong code in the wrong context. But because this short cut has been a feature for such a long time, it’s currently still supported for backwards compatibility, but it’s recommend you don’t use them.

 

2) All the standard library use <?php ?>, full php tags so we can say it’s a standard, if you are open source script (distributable or portable script) writer or have PHP open sources community member then it’s always recommended to use full tag instead of short_tag as by default PHP have it disabled in php.ini settings.

 

3) Due to security reasons in some extent it’s advised to not to use short_open_tag.

 

If you still want to use short_open_tag or if you have just entered in a large application that is previously build by any other developer and he have used short_tags in many places, but your you php setting is was disabled then you should enabled short_open_tag, let me tell how you should do this quickly.

 

1) Open you root’s .htaccess file and add the following in that

[sourcecode language=”plain”]php_flag short_open_tag on[/sourcecode]

or

[sourcecode language=”plain”]php_value short_open_tag 1[/sourcecode]

 

2) If you php.ini access and can update any php directive and setting then open php.ini file and change
short_open_tag = Off to short_open_tag = On

It’s always advised to start Apache services after any changes in php.ini settings.

 

3)

[php] ini_set( "short_open_tag", 1 ); [/php]

will not work, if you are trying to do as it (short_open_tag) is marked as PHP_INI_PERDIR in PHP < 5.3.0, which means you can’t change it with ini_set(). You can check this by below link.

 

Description of core php.ini directives

 

 

Advantages: Let Google Host jQuery For Your Website

Most of us (Web Developer) use JQuery during the development, if you are not aware about the jQuery or interested in any other JavaScript Library then below is just a very quick overview about the jQuery.

 

jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers. With a combination of versatility and extensibility, jQuery has changed the way that millions of people write JavaScript.”

 

Well, how you include that in your file, generally as below.

[code lang=”js”]<script type="text/javascript" src="/js/jQuery.1.8.x.min.js"></script>[/code]

 

We all know that the load of JavaScript directly affect the site page load time and Obviously on SEO. Then how to get rid by jQuery?
No worries, you know as usual Google always help us so let Google host jQuery for your website.

 

You can let Google AJAX Libraries CDN (content delivery network) serve jQuery directly from Google’s network as below.
There are three main benefits of doing this is Decreased latency, Increased parallelism and Better caching that directory affect you site page load.

 

You should use/include JQuery as below

[code lang=”js”]<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>[/code]

 

Benefits of Google CDN Networks(Google hosted JavaScript Libraries)

 

Decreased Latency
A Content Delivery Network (CDN) distributes static content across various servers, diverse physical locations worldwide. When a user visits a page serving files from a CDN, their download will automatically target the closest available server in the network which can reduce download times.

 

Increased Parallelism
All browsers limit the number of connections that can be made simultaneously. Depending on which browser, this limit may be as low as two connections per hostname.
Using the Google AJAX Libraries CDN eliminates one request to your site, allowing more of your local content to be downloaded in parallel.

 

Better Caching
When a user visits a site, their browser will download static files so that when the user visits that page the files will not have to be downloaded again, saving bandwidth usage, server load.
Google AJAX Libraries CDN is that your users may not need to download jQuery at all.

 

If you’re curious why the <script> reference is missing the leading http:, It’s a trick which allows you to use a single reference that works on both HTTP and HTTPS pages.

 

“Protocol-less” URL is the best way to reference third party content that’s available via both HTTP and HTTPS.

 

Solved: PHP move_uploaded_file and copy function both is not uploading the file in destination directory

Fixed: PHP move_uploaded_file() and copy() function is not uploading the file

In the programming field we usually need to upload the files in the folders.

In PHP, we have 2 functions for the purpose.

1st is move_uploaded_file()

2nd one is copy().

 

I think you know well, what the difference between these two copy() vs move_uploaded_file().

Well, if you not aware about the difference between the above 2 PHP functions that is used for file uploading.
Click to view the difference between PHP copy() and PHP move_uploaded_file() function.

 

But this is not my prupose for wrting this post. I want to aware you that sometimes the file uploaded error is something different.
First of all whenever you upload a file you just need to check weather you have used encryption type enctype=”multipart/form-data” and have to use POST method.

 

GET method can’t upload file in any case.
Cool, you have used that then first of all check weather the file has been passed by form and have uploaded to the temp directory.
Basically this is the functionality of file uploading, first during the form post action file uploaded to the temp directory and then we have to move or copy that file in our desired folder or directory.

 

How can you check the temp directory, in which file is going to upload, you can check the same using phpinfo().

upload-temp-directory

You can also change the same (default temp directory) that can be seen in the php.ini file.

If you uploaded a file, but file is not uploaded, first check whether the file ha been uploaded in temp directory or not.
If there has been some error occurred, you can check by print_r array of $_FILES variable.

 

$_FILES

If you get error that means files is not uploaded in temp directory.
It may have 2 reasons, whether the directory no exists or the directory hasn’t proper permission.

 

You can get rid by 2 solutions.

1) Change the path of temp directory in php.ini
2) Check the permission and folder existence.

 

I think, you will better fix the issue related to file upload.

Better Coding, Happy Coding!!

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