Miscellaneous things

Miscellaneous short code snippets

// report all errors:
error_reporting(E_ALL);

// the full path to the current file
print __FILE__;

// print the current line
print __LINE__;

// print the current class name
print __CLASS__;

// print the current method name
print __METHOD__;

// the current directory
print dirname(__FILE__);

// directory separator of the current
// system (windows = \ and linux = /)
print DIRECTORY_SEPARATOR;

// server variables:
print $_SERVER["HTTP_HOST"];
print $_SERVER["REQUEST_URI"];
// more: HTTP_REFERER, SCRIPT_NAME, SERVER_URL

// output all:
print_r($_SERVER);

// constants:
if (!defined('SOMETHING')) {
    define(SOMETHING, "foobar");
}
print SOMETHING;


// special syntax for long strings:
// the variable goes till it finds
// the closing word "EOF;" (it can also be renamed)
$test =<<<EOF
This is an example of an <b>long</b> variable.
You can also put {$some_variables} in here :-)
EOF;
// ^ do not use any spaces in the line above (just "EOQ;")


// sprintf usage:
print sprintf("here you see var1: %s and var2: %s", $var1, $var2);


// this function prints it's own name ("test"):
function test(){
    print __FUNCTION__;
}

// more reserved constants at:
// http://de2.php.net/manual/en/reserved.constants.php

The define()-function requires a string as the first parameter.

Instead of:
---------
// constants:
if (!defined('SOMETHING')) {
define(SOMETHING, "foobar");
}
print SOMETHING;
--------

You could simplify it and do the following:

------------
// constants:
defined('SOMETHING') or define(SOMETHING, "foobar");
print SOMETHING;
---------