reserved variable get $_GET

$HTTP_GET_VARS



$_GET -- $HTTP_GET_VARS [deprecated] — HTTP GET variables


An associative array of variables passed to the current script via the URL parameters (aka. query string). Note that the array is not only populated for GET requests, but rather for all requests with a query string.


$HTTP_GET_VARS contains the same initial information, but is not a superglobal. (Note that $HTTP_GET_VARS and $_GET are different variables and that PHP handles them as such)


	      		<?php
				echo 'Hello ' . htmlspecialchars($_GET["name"]) . '!';
				?>
	      

Note: This is a 'superglobal', or automatic global, variable. 
		   This simply means that it is available in all scopes throughout a script. There is no need to do 
		 global $variable; to access it within functions or methods.

Note: The GET variables are passed through urldecode().

		  		<?php 
				// Smart GET function
				public function GET($name=NULL, $value=false, $option="default")
				{
				    $option=false; // Old version depricated part
				    $content=(!empty($_GET[$name]) ? trim($_GET[$name]) : (!empty($value) && !is_array($value) ? trim($value) : false));
				    if(is_numeric($content))
				        return preg_replace("@([^0-9])@Ui", "", $content);
				    else if(is_bool($content))
				        return ($content?true:false);
				    else if(is_float($content))
				        return preg_replace("@([^0-9\,\.\+\-])@Ui", "", $content);
				    else if(is_string($content))
				    {
				        if(filter_var ($content, FILTER_VALIDATE_URL))
				            return $content;
				        else if(filter_var ($content, FILTER_VALIDATE_EMAIL))
				            return $content;
				        else if(filter_var ($content, FILTER_VALIDATE_IP))
				            return $content;
				        else if(filter_var ($content, FILTER_VALIDATE_FLOAT))
				            return $content;
				        else
				            return preg_replace("@([^a-zA-Z0-9\+\-\_\*\@\$\!\;\.\?\#\:\=\%\/\ ]+)@Ui", "", $content);
				    }
				    else false;
				}
				/*
				DEFAULT: $_GET['page'];
				SMART: GET('page'); // return value or false if is null or bad input
				*/
				?>
		  


Example


		  		<?php
			    function php_fix_raw_query() {
			        $post = '';
			         
			        // Try globals array
			        if (!$post && isset($_GLOBALS) && isset($_GLOBALS["HTTP_RAW_POST_DATA"]))
			            $post = $_GLOBALS["HTTP_RAW_POST_DATA"];
			         
			        // Try globals variable
			        if (!$post && isset($HTTP_RAW_POST_DATA))
			            $post = $HTTP_RAW_POST_DATA;
			         
			        // Try stream
			        if (!$post) {
			            if (!function_exists('file_get_contents')) {
			                $fp = fopen("php://input", "r");
			                if ($fp) {
			                    $post = '';
			                     
			                    while (!feof($fp))
			                    $post = fread($fp, 1024);
			                     
			                    fclose($fp);
			                }
			            } else {
			                $post = "" . file_get_contents("php://input");
			            }
			        }
			         
			        $raw = !empty($_SERVER['QUERY_STRING']) ? sprintf('%s&%s', $_SERVER['QUERY_STRING'], $post) : $post;
			         
			        $arr = array();
			        $pairs = explode('&', $raw);
			         
			        foreach ($pairs as $i) {
			            if (!empty($i)) {
			                list($name, $value) = explode('=', $i, 2);
			                 
			                if (isset($arr[$name]) ) {
			                    if (is_array($arr[$name]) ) {
			                        $arr[$name][] = $value;
			                    } else {
			                        $arr[$name] = array($arr[$name], $value);
			                    }
			                } else {
			                    $arr[$name] = $value;
			                }
			            }
			        }
			         
			        foreach ( $_POST as $key => $value ) {
			            if (is_array($arr[$key]) ) {
			                $_POST[$key] = $arr[$name];
			                $_REQUEST[$key] = $arr[$name];
			            }
			        }
			                 
			        foreach ( $_GET as $key => $value ) {
			            if (is_array($arr[$key]) ) {
			                $_GET[$key] = $arr[$name];
			                $_REQUEST[$key] = $arr[$name];
			            }
			        }

			    # optionally return result array 
			        return $arr;
			    }


			?>
		  




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