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<?php declare(strict_types=1); |
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/** |
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* Should be used for getting request data for processing pages. |
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* For display pages, see SmrSession::getRequestVar. |
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*/ |
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class Request { |
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/** |
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* Returns true if index is set. |
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* Note that this must be used for checkboxes, since the element is not |
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* posted if a box is unchecked. |
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*/ |
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public static function has(string $index) : bool { |
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return isset($_REQUEST[$index]); |
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} |
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/** |
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* Returns index value as an integer. |
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*/ |
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public static function getInt(string $index, int $default = null) : int { |
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if (self::has($index)) { |
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return (int)$_REQUEST[$index]; |
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} elseif (!is_null($default)) { |
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return $default; |
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} |
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throw new Exception('No request variable "' . $index . '"'); |
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} |
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/** |
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* Returns index value as a float. |
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*/ |
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public static function getFloat(string $index, float $default = null) : float { |
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if (self::has($index)) { |
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return (float)$_REQUEST[$index]; |
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} elseif (!is_null($default)) { |
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return $default; |
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} |
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throw new Exception('No request variable "' . $index . '"'); |
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} |
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/** |
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* Returns index value as an array of strings. |
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*/ |
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public static function getArray(string $index, array $default = null) : array { |
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if (self::has($index)) { |
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return $_REQUEST[$index]; |
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} elseif (!is_null($default)) { |
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return $default; |
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} |
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throw new Exception('No request variable "' . $index . '"'); |
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} |
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/** |
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* Returns index value as an array of integers. |
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*/ |
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public static function getIntArray(string $index, array $default = null) : array { |
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if (self::has($index)) { |
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$result = []; |
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foreach ($_REQUEST[$index] as $key => $value) { |
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$result[$key] = (int)$value; |
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} |
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return $result; |
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} elseif (!is_null($default)) { |
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return $default; |
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} |
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throw new Exception('No request variable "' . $index . '"'); |
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} |
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/** |
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* Returns index value as a string. |
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*/ |
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public static function get(string $index, string $default = null) : string { |
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if (self::has($index)) { |
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return $_REQUEST[$index]; |
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} elseif (!is_null($default)) { |
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return $default; |
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} |
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throw new Exception('No request variable "' . $index . '"'); |
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} |
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/** |
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* Returns index value as a string from either $_REQUEST or $var. |
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* This is useful for processing pages that need to handle data both from |
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* posted form inputs and from container variables. |
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* |
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* Note that this does not save the result in $var (see SmrSession). |
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*/ |
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public static function getVar(string $index, string $default = null) : string { |
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return self::getVarX($index, $default, 'get'); |
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} |
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/** |
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* Like getVar, but returns an int instead of a string. |
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*/ |
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public static function getVarInt(string $index, int $default = null) : int { |
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return self::getVarX($index, $default, 'getInt'); |
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} |
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/** |
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* Like getVar, but returns an array of ints instead of a string. |
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*/ |
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public static function getVarIntArray(string $index, array $default = null) : array { |
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return self::getVarX($index, $default, 'getIntArray'); |
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} |
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/** |
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* Helper function to avoid code duplication in getVar* functions. |
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*/ |
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private static function getVarX($index, $default, $func) { |
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global $var; |
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if (isset($var[$index])) { |
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// An index may be present in both var and request. This indicates |
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// a logical error in the code, unless the values are the same, |
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// which can occur if, e.g., player refreshes a page (this is OK). |
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if (self::has($index) && $var[$index] !== self::$func($index, $default)) { |
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throw new Exception('Index "' . $index . '" inconsistent between $var and $_REQUEST!'); |
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} |
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return $var[$index]; |
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} |
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return self::$func($index, $default); |
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} |
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} |
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smrealms /
smr
