Difference between revisions of "Learning PHP (2)"

Revision as of 17:01, 3 September 2015

This article contains examples of PHP.

Timestamp

PHP provides the time function, which returns the time (from the server clock).

The time can be formatted and used in a variety of ways.

Code snippet:

<p><?php echo time(); ?></p>

Observe how the above code snippet mixes HTML with PHP code islands.

View online.

Use your browser's View Source or Inspect Element to confirm that the web page's source code contains only HTML, no PHP.

See [time] for documentation, Timestamp for general information.

Date

PHP provides the date() function, which returns date and time.

The date and time can be formatted and used in a variety of ways.

Code snippet:

<p><?php echo date("Y/m/d"); ?></p>
<p><?php echo date("l"); ?></p>

Observe how the above code snippet mixes HTML with PHP code islands.

View online.

Use your browser's View Source or Inspect Element to confirm that the web page's source code contains only HTML, no PHP.

See PHP date for more information.

HTML special character handling

Warning: this topic is critical to web security.

Always use htmlspecialchars (or some equivalent technology) when processing user input. Always, always, always.

PHP provides a function named htmlspecialchars which handles special HTML characters.

Handles, in this case, includes replacing dangerous HTML with safe HTML.

See PHP htmlspecialchars function.

See Online example

GET method

	<?php		
		echo htmlspecialchars ( $_GET['firstname'] ) ;
	?>  
<hr />
	<?php		
		echo htmlspecialchars ( $_GET['email'] ) ;
	?>  

See Also

• Getting started with PHP
• PHP
• PHP date
• PHP date and time
• PHP htmlspecialchars function
• PHP timestamp

External links

Documentation

• Date and Time
• DateTime class
• date

Tutorials

• PHP 5 Date and Time
• PHP 5 Date/Time Functions
• PHP date() Function
• Get current date and time in PHP
• DateTime In PHP
• Dates and Time - The OOP Way