Alternative Hungarian Notation

PHP Programming Code Snippets

Coding Standards

Code snippets are useful for any beginners to learn code from.

• echo "the text to print"; - This language construct will echo the text between the quotes. This is not a function but a language construct.
• echo "$var"; - Notice the double quotation marks. Because double quotation marks are used, this will print thevalue of the variable. If $var="Bobby", this will output:

Bobby

• echo '$var'; - Notice that the quotation marks are now single. This will output the literal keystrokes inside the quotes. The example will output:

$var

• $var="Jericho";echo "Joshua fit the battle of $var."; - Other than substituting the value of a variable for the variable name (and one or two other minor items), double quotes will quote literal keystrokes. So this will output:

Joshua fit the battle of Jericho.

Again, if single quotes were used —'Joshua fit the battle of $var'; — this would output:

Joshua fit the battle of $var.

• echo $var; - If you only want to print the value of a variable, you don't need quotes at all. If the value of $var is "1214", the code will output:

1214

• require "url"; - This language construct will include the page between the quotes. Can NOT be used with dynamic pages, e.g.require("main.php?username=SomeUser"); wouldnot work. This is not a function but a language construct.
• date("Date/time format"); - Function that returns a date from a Unix Timestamp - where H is the hour, i is the minutes, s is the seconds, d is the day, m is the month and Y is the year in four digits - e.g.date("H:i:s d/m/Y"); would return12:22:01 10/08/2006 on 10^th August 2006 at 12:22:01.
• unlink("filename"); - Function that deletes the file specified infilename.

<?php$variable1='beginning';//This is a comment after a variable being definedif($variable1=='beginning'){//If is a test to see if a variable has certain//value and initiates the wanted sequences if trueecho'Hello World!';//The echo displays to the page}else{echo'some code';}?>

Include OOP based examples, made by experienced developer

Basics, working only on PHP 5.

• file_put_contents("filename", "Text to save"); - Functions that saves the text specified inText to save to the file specified infilename. Will overwrite existing file contents unless another parameter FILE_APPEND is added.

E.g.file_put_contents("filename", "Text to save"); will writeText to save tofilename, but will overwrite existing text whereasfile_put_contents("filename", "Text to save", FILE_APPEND); will writeText to save tofilename, but willnot overwrite existing text (instead it appends).

1. Input validation byKgrsajid.
2. Advanced Input validation by nemesiskoen.

Alternative Hungarian Notation

PHP Programming Code Snippets

Coding Standards

• Book:PHP Programming