As a Web Developer or Web Designer, it is important that website’s we develop are working on all major browsers, or on all(old or new) browsers if possible. but some browsers (specially the old one’s) has their own specific way of translating or handling css /style directions.

And also sometimes we need to show or hide some specific elements for some browsers or browser versions.

for situations like the above, stylesheet separation for specific browsers can help.  look at the codes below.

<?php
if(strstr($_SERVER['HTTP_USER_AGENT'], "MSIE 6")){
?>
<link rel="stylesheet" type="text/css" href="/css/ie6.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "MSIE 7")) {
?>
<link rel="stylesheet" type="text/css" href="/css/ie7.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "MSIE 8")) {
?>
<link rel="stylesheet" type="text/css" href="/css/ie8.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "Firefox")) {
?>
<link rel="stylesheet" type="text/css" href="/css/ff.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "Chrome")){
?>
<link rel="stylesheet" type="text/css" href="/css/chr.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "Safari")){
?>
<link rel="stylesheet" type="text/css" href="/css/saf.css" />
<?php
}
?>

what this codes do is detect the users browser then prints the specific stylesheet for that browser. you can put this code directly below your main CSS stylesheet, because the primary use of this code is to override the main CSS settings. so for example a div is showing differently in IE6 browser, you can just include the style direction of this div into the ie6.css, so when a user browse your website using IE6 browser, the main CSS setting for this div will be override by ie6.css.

the code above can also be used on a wordpress blog or wordpress based sites, you just need to add your wordpress site’s template url to the CSS path. please look at the code below.

<?php
if(strstr($_SERVER['HTTP_USER_AGENT'], "MSIE 6")){
?>
<link rel="stylesheet" type="text/css" href="<?php bloginfo('template_url'); ?>/css/ie6.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "MSIE 7")) {
?>
<link rel="stylesheet" type="text/css" href="<?php bloginfo('template_url'); ?>/css/ie7.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "MSIE 8")) {
?>
<link rel="stylesheet" type="text/css" href="<?php bloginfo('template_url'); ?>/css/ie8.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "Firefox")) {
?>
<link rel="stylesheet" type="text/css" href="<?php bloginfo('template_url'); ?>/css/ff.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "Chrome")){
?>
<link rel="stylesheet" type="text/css" href="<?php bloginfo('template_url'); ?>/css/chr.css" />
<?php
} elseif(strstr($_SERVER['HTTP_USER_AGENT'], "Safari")){
?>
<link rel="stylesheet" type="text/css" href="<?php bloginfo('template_url'); ?>/css/saf.css" />
<?php
}
?>

You can insert this code into your wordpress theme’s header file (header.php), directly below the main CSS declaration:

<link rel="stylesheet" href="<?php bloginfo('stylesheet_url'); ?>" type="text/css" media="screen" />

Enjoy! please share.

well today I’ll share some ways on how to Search and Replace datas or texts in WordPress. this will be useful when you are transferring a wordpress blog from one domain to another or if you’ve developed a wordpress site on your localhost and you’re gonna upload it to an online server or on your own domain, of course you need to update the paths on your posts.

for example you’ve developed a wordpress site on your local machine and you installed it on http://localhost/wordpress, when you transfer the site into a live server, you need to change that path in your database for wordpress to display your blog posts or menu links correctly, and not only that – there may be times that you hardcoded a link (eg. images,post) in your blog post. i dont know for you, but for me updating it one by one is a no no.. i mean why are you gonna do it manually, when you can do it automatically? right? right? or left? haha..

Here are some other ways or situations on when you can use the search and replace function.

1. Correcting a typographical Error – you discovered that one of the words you frequently use was mispelled, for example instead of typing a bacon, you are typing in and using the word vacon with a “V” all the time (haha..)

2. Updating a Name/Word - you want to change word1 to word2, or name1 to name2

3. Deleting Weird Characters - you are copying and pasting articles from one site or documents and you didn’t noticed that some special characters are also copied eg. Â, ♠ , ¶ ,Æ and so on..

Here are some methods that you can do to search and replace texts in wordpress database or blog posts.

1. using MySQL search and replace function within PHPMYADMIN

open your wordpress database using phpmyadmin, click the SQL tab and enter the following codes:

UPDATE wp_posts SET post_content = REPLACE (
post_content,
'OLD TEXT',
'NEW TEXT');

the code above uses the MySQL replace function to first search the OLD TEXT in the wp_posts table then post_content field, and when found replace it with the NEW TEXT.

you can search and replace datas from any tables/table fields in the database. you can also use this method on any applications that uses mysql as a database.

2. using WordPress Search and Replace Plugin

same functionality as the mysql replace function, the only difference is this plugin provides a user interface within the wordpress admin panel. you can download the plugin here. http://wordpress.org/extend/plugins/search-and-replace/

NOTE: Don’t forget to create a back up of your database first before trying any of the methods above. ok? it’s better to be sure, right?

Enjoy! please share.

the basic structure or syntax of conditional statements is just..like plain HTML comments so therefore you can only use it inside an html file..

here are some examples of Internet Explorer Conditional Statement syntax

<!--[if IE 6]>
enter your instructions for ie6 here
<![endif]-->

<!--[if gte IE 5]>
enter your instructions for ie browers greater than or equal to ie5
<![endif]-->

<!--[if lte IE 6]>
enter your instructions for ie browsers lower or equal to ie6
<![endif]-->

<!--[if lt IE 6]>
enter your instructions for ie browsers lower than ie6
<![endif]-->

<!--[if gt IE 6]>
enter your instructions for ie6 here
<![endif]-->

this is very usefull for example if you want to separate a css file for different different versions
of internet explorer you can use this, or if you want to output messages to your site visitor telling
them that they are using ie. here are some examples

Using conditional statement to separate css stylesheet

<!--[if IE 6]>
<link rel="stylesheet" type="text/css" href="ie6.css">
<![endif]-->

<!--[if IE 7]>
<link rel="stylesheet" type="text/css" href="ie7.css">
<![endif]-->

Using Conditional statement to output text to the browser

<!--[if IE 6]>
Hi There! You are using Internet Explorer 6
<![endif]-->

<!--[if IE 5]>
Hi there! You are a legend your still using IE5?
<![endif]-->

Enjoy

Fatal error: Allowed memory size of …… bytes exhausted (tried to allocate …. bytes) in home/of/some/thing/fishy.php

I experienced this weird WordPress or rather PHP error last night when trying to view my blog when i got home, at first i thought that there was a technical problem at my server so i waited, then i waited and waited and waited again for almost 7 hours then i cant wait no more i want to blogggg… so i contact my hosting provider and they told me that there is nothing wrong with the server nahhh WTF! i told to my self. . but i cant figure out the problem at first. .then i figure out that i can access other part of my site. .so i said to myself.. hmm maybe its because of the plugin that i last installed so again i waited and let the night past but the error was still there when i woke up. .did you know what did i do? haha call me dumb coz i dont know what to do so i decided to delete my blog files and install wordpress again but ofcourse i backed up my database so i can restore. . but the problem is still there nahh WTF again i said to my self. . haha until i found a bit of code that can save my life sana haha hhyeahh: . . PHP Memory Allocation Error was the real problem it is an error returned by php when it used up the default memory limit, it occurs when PHP is handling or processing a large amount of data or records more that its default memory allocation. I found to 3 ways to Fix this problem

1st: Increase the memory limit of an individual PHP file

ini_set(”memory_limit”,”16M”);

Put this code at the top of every PHP file that errors are showing, you can expand the memory by changing the 16M to a other value if your still getting errors,. you can set it to 16M, 18M etc..

2nd: edit your PHP.INI file – this option will apply to all the php files in your site

search your php.ini file and find memory_limit: put values like at the top for example

memory_limit: 16M

3rd: use .htaccess to expand the memory allocation – this option will apply to all the php files in your site

php_value memory_limit 32000000

Copy and paste the code above to your .htaccess file

Thats it! the errors are gone

To do this refer to the example below..

PHP Single Line Comment:

<?php
// Hi There I am a PHP single line comment!
?>

PHP Multi-Line comment:

<?php
/* Hello everybody I am
PHP Multi-Line Comment */
?>

consider this example on embedding your first PHP script into HTML.

<html>
<head>
<title>Hello World!</title>
</head>
<body>
<!-- This is how you print output in PHP-->

<h2><?php echo "Philippines is a beautiful country!"; ?></h2>

</body>
</html>

copy and save this to your text editor with a .php extension then run it on your localhost..

echo – is a function for printing output.

Remember: you should always end your php statement with a semicolon ( ; ) or else you will get an error, this is true if you have complex php statement, but in the example above it will work fine even if we remove the semicolon at the end of our statement because the closing tag ?> has an implicit semicolon, however it is a good programming practice to end php statement with a semicolon.

you should get this output from your browser..

Remember: White space is not important in php, so…

<html>
<head>
<title>Hello World!</title>
</head>
<body>
<!-- This is how you print output in PHP-->

<h2><?php

echo "Philippines is a beautiful country!";

?></h2>

</body>
</html>

would yield the same output as above.

if you look at the HTML source at your browser you should see something like this. .

<html>
<head>
<title>Hello World!</title>
</head>
<body>

<!- - This is how you print output in PHP- ->

<h2>Philippines is a beautiful country!</h2>

</body>
</html>

Notice that the php tags didnt show up.. it’s because the server understand our php script it processed it and just return to the browser the output which is a valid HTML.

it looks like this..

<?php
. . . . . . . . . . . . . . . . . . . . . .
YOUR PHP CODE HERE
. . . . . . . . . . . . . . . . . . . . . .
?>

you can also use the PHP Short open tags:

<? ?>
<?= ?>

but this is considered a bad habit.. you can use this tags but be sure that short open tag is set to on in your PHP.INI file.

there is another tag style which is the ASP Style Tag:

<% %>
<%= >

this is considered as a very bad habit.. because it doesn’t always work, for example your friend send you a php file using this style and you run it on your server, but suddenly your server doesn’t allow the use of this tags, of course the code wont work!

you can use these style but you also need to enable them in the PHP.INI file..

WHAT DO YOU NEED…

1. A Web Server - Apache / IIS will work too..
   
2. PHP - so that our web server can understand our php file.
   
3. Database - MySQL
4. Text Editor - Notepad, Dreamweaver, PHP Designer or any text editor that you want..
5. Web Browser - you can use any broswer of your choice(Firefox, IE, SAFARI, OPERA, Chrome)..
6. Operating System - Linux, Windows or Mac OS.
   

In this tutorial you may use any of the following:

LAMP stands for Linux, Apache, MysQL, PHP

WAMP stands for Windows, Apache, MysQL, PHP

MAMP stands for Mac, Apache, MysQL, PHP

XAMPP stands for Any OS, Apache, MysQL, PHP, Perl

choose any of the above mentioned depending on the operating system you’re using, this is includes all the source code, binaries, folders etc.. in just one installation!

DOWNLOAD LINK…

download the latest stable package..

XAMPP – http://www.apachefriends.org/en/

WAMP – http://www.wampserver.com/en/

MAMP – http://www.mamp.info/en/download.html

for linux users you may just download xampp..

After downloading Install it and now you’re good to go…

* for windows user, open your favorite browser then type http://localhost on the address bar

* for mac users do the same thing but put ~youruserdirectory after http://localhost, so if your userdirectory on mac is daniel, you need to type http://localhost/~daniel

WHAT IS PHP?

• It is a server-side, scripting language. - it does’nt need a compiler to run or it does’nt need to be compiled. Another example of scripting language is Javascript. but unlike Javascript, PHP runs on the web server. Javasript runs on the users browser.

• PHP’s syntax is very similar to C, Perl and Java.
• It is an HTML embedded scripting language. - it is used to output html in the browser. you need to change the extension file of your html to .php to tell the server process it as php.
• It can make your page more dynamic.

WHY USE PHP?

• It is open source - it is free to download and free to use.

• It is cross platform - it can run on windows, mac or linux server, and all browsers.

• Most opensource web applications are powered by PHP - WordPress, Joomla, Mambo, PhpBB, etc. by learning php you may be able to work with these and also customize it.

• Almost 20Million webpages in the world uses PHP - just like google, friendster, multiply, facebook, etc..

• It is powerful, robust and scalable - it can deliver excellent performance even if your site is a high traffic site.

• it has built in database support -you can create database driven web applications immediately.

• Anything you can do with a regular programming laguages, you can do with PHP - you can perform calculations, validate user inputs, process forms, read and write files etc…