192 lines
5.1 KiB
PHP
192 lines
5.1 KiB
PHP
<?php
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use Engelsystem\ValidationResult;
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/**
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* Provide page/request helper functions
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*/
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/**
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* Parse a date from da day and a time textfield.
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*
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* @param string $date_name
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* Name of the textfield containing the day (format Y-m-d)
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* @param string $time_name
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* Name of the textfield containing the time (format H:i)
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* @param string[] $allowed_days
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* List of allowed days in format Y-m-d
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* @param int $default_value
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* Default value unix timestamp
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*/
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function check_request_datetime($date_name, $time_name, $allowed_days, $default_value) {
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$time = date("H:i", $default_value);
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$day = date("Y-m-d", $default_value);
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if (isset($_REQUEST[$time_name]) && preg_match('#^\d{1,2}:\d\d$#', trim($_REQUEST[$time_name]))) {
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$time = trim($_REQUEST[$time_name]);
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}
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if (isset($_REQUEST[$date_name]) && in_array($_REQUEST[$date_name], $allowed_days)) {
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$day = $_REQUEST[$date_name];
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}
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return parse_date("Y-m-d H:i", $day . " " . $time);
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}
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/**
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* Parse a date into unix timestamp
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*
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* @param string $pattern
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* The date pattern (i.e. Y-m-d H:i)
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* @param string $value
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* The string to parse
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* @return The parsed unix timestamp
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*/
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function parse_date($pattern, $value) {
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$datetime = DateTime::createFromFormat($pattern, trim($value));
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if ($datetime == null) {
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return null;
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}
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return $datetime->getTimestamp();
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}
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/**
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* Leitet den Browser an die übergebene URL weiter und hält das Script an.
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*/
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function redirect($url) {
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header("Location: " . $url, true, 302);
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raw_output("");
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}
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/**
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* Echoes given output and dies.
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*
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* @param String $output
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* String to display
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*/
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function raw_output($output) {
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echo $output;
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die();
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}
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/**
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* Helper function for transforming list of entities into array for select boxes.
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*
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* @param array $data
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* The data array
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* @param string $key_name
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* name of the column to use as id/key
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* @param string $value_name
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* name of the column to use as displayed value
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*/
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function select_array($data, $key_name, $value_name) {
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$ret = [];
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foreach ($data as $value) {
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$ret[$value[$key_name]] = $value[$value_name];
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}
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return $ret;
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}
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/**
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* Returns an int[] from given request param name.
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*
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* @param String $name
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* Name of the request param
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* @param array<int> $default
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* Default return value, if param is not set
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*/
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function check_request_int_array($name, $default = []) {
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if (isset($_REQUEST[$name]) && is_array($_REQUEST[$name])) {
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return array_filter($_REQUEST[$name], 'is_numeric');
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}
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return $default;
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}
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/**
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* Checks if given request item (name) can be parsed to a date.
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* If not parsable, given error message is put into msg() and null is returned.
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*
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* @param string $input
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* String to be parsed into a date.
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* @param string $error_message
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* the error message displayed if $input is not parsable
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* @param boolean $null_allowed
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* is a null value allowed?
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* @return ValidationResult containing the parsed date
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*/
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function check_request_date($name, $error_message = null, $null_allowed = false) {
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if (! isset($_REQUEST[$name])) {
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return new ValidationResult($null_allowed, null);
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}
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return check_date($_REQUEST[$name], $error_message, $null_allowed);
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}
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/**
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* Checks if given string can be parsed to a date.
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* If not parsable, given error message is put into msg() and null is returned.
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*
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* @param string $input
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* String to be parsed into a date.
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* @param string $error_message
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* the error message displayed if $input is not parsable
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* @param boolean $null_allowed
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* is a null value allowed?
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* @return ValidationResult containing the parsed date
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*/
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function check_date($input, $error_message = null, $null_allowed = false) {
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if ($tmp = parse_date("Y-m-d H:i", trim($input) . " 00:00")) {
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return new ValidationResult(true, $tmp);
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}
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if ($null_allowed) {
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return new ValidationResult(true, null);
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}
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error($error_message);
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return new ValidationResult(false, null);
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}
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/**
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* Returns REQUEST value filtered or default value (null) if not set.
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*/
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function strip_request_item($name, $default_value = null) {
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if (isset($_REQUEST[$name])) {
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return strip_item($_REQUEST[$name]);
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}
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return $default_value;
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}
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/**
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* Testet, ob der angegebene REQUEST Wert ein Integer ist, bzw.
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* eine ID sein könnte.
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*/
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function test_request_int($name) {
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if (isset($_REQUEST[$name])) {
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return preg_match("/^[0-9]*$/", $_REQUEST[$name]);
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}
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return false;
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}
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/**
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* Gibt den gefilterten REQUEST Wert mit Zeilenumbrüchen zurück
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*/
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function strip_request_item_nl($name, $default_value = null) {
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if (isset($_REQUEST[$name])) {
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return preg_replace("/([^\p{L}\p{S}\p{P}\p{Z}\p{N}+\n]{1,})/ui", '', strip_tags($_REQUEST[$name]));
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}
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return $default_value;
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}
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/**
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* Entfernt unerwünschte Zeichen
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*/
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function strip_item($item) {
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return preg_replace("/([^\p{L}\p{S}\p{P}\p{Z}\p{N}+]{1,})/ui", '', strip_tags($item));
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}
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/**
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* Überprüft eine E-Mail-Adresse.
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*/
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function check_email($email) {
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return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
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}
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?>
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