Functions are basic blocks of code that work together. Functions can be used from the core PHP or can be created by users.
To create a function, use the following syntax: function function_name(arg1, arg2, ... argX)
{
//Any valid php code here
}
To use a function, use the following syntax:
function_name(arg1, arg2, ... argX);
in php used for one typ website
we cant use set timeout function in php because it is of java script function
Below is a simple example of how you could return a value in a PHP function. <?php function returnme($value) { return $value; } echo returnme('hello'); // outputs: hello ?>
function function_name() { .................... }
The eval() function evaluates a string as PHP code. http://us.php.net/manual/en/function.eval.php
A simple function call <html> <body> <?php if(isset($_POST['button'])) { setValue(); // Function is called } function setValue() { echo "<br>The button property to call PHP function works"; // Your code here } ?> <input type="submit" name="button" onclick=<?php $_SERVER['PHP_SELF']; ?> /> </body> </head>
chdir() PHP function helps in changing the current directory.
It gets options from the command line argument list. It can be used in PHP 4.3 and above, including PHP 5.
With a call to the function func_num_args().
header() is a php function used to modify and set HTTP headers sent to the browser.
To rename a file in PHP the easiest way to do it is to use the rename() function. <?php rename("before.txt", "after.html"); ?>
To include a file in PHP all you need to do is use the include() function as I have shown you in the example below. <?php include("filename.php"); ?>