\n";
if ( has_POST() ) {
echo "\n----------\n";
echo '$_POST["test"]: ';
print_r( _POST('test') );
echo "\n----------\n";
echo '$_POST["test"]["abc"]["123"]: ';
print_r( _POST( array( 'test','abc','123' ) ) );
echo "\n----------\n";
echo '$_POST["test"][abc][123][xyz]: ' . _POST( array( 'test', 'abc','123','xyz' ) );
echo "\n----------\n";
}
if ( has_GET() ) {
echo '$_GET["foo"]: ' . _GET('foo');
echo "\n----------\n";
echo '$_GET["bar"]: ' . _GET('bar');
echo "\n----------\n";
echo '$_GET["baz"]: ' . _GET('baz', '1001' );
if ( ! has_GET('banana') ) {
echo "\n----------\nWe have no bananas today.\n";
}
}
echo "\n\n";
/**
* Retrieves value of $_GET[$key]
*
* @example
*
* For URL http://example.com?test=50:
* Retrieve value with: _GET( 'test', 25 ) with a default value of 25
*
* @param string $key
* @param mixed $default
*
* @return null|mixed Defaults to null if $key not in $_GET.
*/
function _GET( $key, $default = null ) {
if ( WP_DEBUG && is_array( $key ) )
trigger_error( sprintf( __( '_GET() does not support array keys.' ) ), E_USER_WARNING );
return _GPCS( $_GET, 'GET', $key, $default );
}
/**
* Retrieves value of $_POST[$key]
*
* Note: See $key can be an array, see example:
*
* @example
*
* For HTML w/default value of 25:
* Retrieve value with: _POST( 'test', 25 )
*
* For HTML
* Retrieve value with: _POST( array( 'test', 'abc','123','xyz' ) )
*
* @param string|array $key
* @param mixed $default
*
* @return null|mixed
*/
function _POST( $key, $default = null ) {
return _GPCS( $_POST, 'POST', $key, $default );
}
/**
* Retrieves value of $_REQUEST[$key]
*
* Note: See $key can be an array, see example:
*
* @example
*
* For HTML w/default value of 25:
* Retrieve value with: _REQUEST( 'test', 25 )
*
* For HTML
* Retrieve value with: _REQUEST( array( 'test', 'abc','123','xyz' ) )
*
* @param string|array $key
* @param mixed $default
*
* @return null|mixed
*/
function _REQUEST( $key, $default = null ) {
return _GPCS( $_REQUEST, 'REQUEST', $key, $default );
}
/**
* Tests for existance of $key as an array element in $_GET, or if count($_GET)>0 when $key is null.
*
* @param null|string|array $key Key value
*
* @return bool
*/
function has_GET( $key = null ) {
return _has_GPCS( $_GET, 'GET', $key );
}
/**
* Tests for existance of $key as an array element in $_POST, or if count($_POST)>0 when $key is null.
*
* @param null|string|array $key Key value
*
* @return bool
*/
function has_POST( $key = null ) {
return _has_GPCS( $_POST, 'POST', $key );
}
/**
* Tests for existance of $key as an array element in $_REQUEST, or if count($_REQUEST)>0 when $key is null.
*
* @param null|string|array $key Key value
*
* @return bool
*/
function has_REQUEST( $key = null ) {
return _has_GPCS( $_REQUEST, 'REQUEST', $key );
}
/**
* Helper function to support accessing $_GET, $_POST and $_REQUEST
*
* Retrieves value of $_POST[$key], $_GET[$key] or $_REQUEST[$key]
*
* Note: $key can be an array, see example:
*
* @example
*
* For HTML w/default value of 25:
* Retrieve value with: _GPCS( $_POST, 'POST', 'test', 25 )
*
* For HTML
* Retrieve value with: _GPCS( $_POST, 'POST', array( 'test', 'abc','123','xyz' ) )
*
* @param array $array Pass in $_POST, $_GET or $_REQUEST
* @param string $type Pass in 'POST', 'GET' or 'REQUEST'
* @param mixed $key Key value, may be array
* @param null $default
*
* @return null
*/
function _GPCS( $array, $type, $key, $default = null ) {
if ( ( is_string( $key ) || is_numeric( $key ) ) ) {
if ( isset( $array[$key] ) )
return $array[$key];
else
return $default;
} else if ( is_array( $key ) ) {
$value = $array;
foreach( $key as $subkey ) {
if ( isset( $value[$subkey] ) ) {
$value = $value[$subkey];
} else {
return $default;
}
}
return $value;
} else if ( WP_DEBUG ){
trigger_error( sprintf( __( 'The key [%s] passed to _%s() is not a string, numeric or array.' ), $key, $type ), E_USER_WARNING );
}
return $default;
}
/**
* Tests for existance of $key as an array element in $_POST, $_GET or $_REQUEST or if count($_*)>0 when $key is null
*
* @param array $array Pass in $_POST, $_GET or $_REQUEST
* @param string $type Pass in 'POST', 'GET' or 'REQUEST'
* @param null|string|array $key Key value, may be array
*
* @return bool
*/
function _has_GPCS( $array, $type, $key = null ) {
if ( is_null( $key ) ) {
return 0 < count($array);
} else if ( ( is_string( $key ) || is_numeric( $key ) ) ) {
return isset( $array[$key] );
} else if ( is_array( $key ) ) {
$value = $array;
foreach( $key as $subkey ) {
if ( ! isset( $value[$subkey] ) ) {
return false;
}
}
return true;
}
return false;
}