Want to display PHP code with syntax highlighting (colors). This helps with debugging, etc.

Within PHP you can nicely display colorful text, which can be very useful for debugging or just to showcase your code.

We simply use the highlight_file function within PHP, like this below.

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• PHP Docs HighLight File Func

You want to display a counter on your web page, but you do not want to use a db.

All you need to make this work is echo “1″ into a file called counter and ensure the web user has write access. For example: $ echo 1 > counter; chmod 777 counter;

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• PHP Docs fopen Function
• PHP Docs fputs Function
• PHP Docs fread Function
• PHP Docs fclose Function
• PHP Docs filesize Function

You want to open save the contents of a file, into a variable in PHP.

Simple demo on opening and reading contents of files in PHP.

Script under example tab takes filename as a parameter, then opens it read-only and reads contents in data variable.

Then it echoes a header and footer line, with the data in the middle.

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• PHP Docs fopen Function
• PHP Docs fgets Function
• PHP Docs feof Function
• PHP Docs fclose Function

You want to intersperse HTML with PHP code.

Just getting back to basics, this is a very simple demo
of how to implement PHP code along with HTML.

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You want to create an array, then traverse it.

Following up from part one - working with arrays.

To spin through all elements in our names array, here is the code below.

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• PHP Docs on array

You want to work with string index arrays. Sometimes called Hashes.

PHP can handle number or string indexed arrays.

Arrays can be initialized in a number of ways. For example:

Basic array assignment and initialization, without specify numbers or strings:

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• PHP Docs on array

You want to perform regular expression with PHP.

Again PHP implementation of regular expression is very similar to Perl.

In the simpliest form, pattern matching:

got a match

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• PHP Docs ereg Function
• PHP Docs eregi Function

You want to perform string manipulation with PHP.

Following on from the intro post, see the example tab for some more demos on PHP string manipulation.

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• PHP Docs strlen Function
• PHP Docs chr Function

Substituting and trimming string variables in PHP.

Similar to Perl, PHP has an extensive library of functions.

See the example tab for a few simple examples, showing the basic syntax.

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• PHP Docs substr Function
• PHP Docs trim Function