jespernyhlen / weather-module

src/function.php

<?php
/**
 * Get value from GET variable or return default value.
 *
 * @param string $key     to look for
 * @param mixed  $default value to set if key does not exists
 *
 * @return mixed value from GET or the default value
 */
function getGet($key, $default = null)
{
    return isset($_GET[$key])
        ? $_GET[$key]
        : $default;
}



// /**
//  * Get value from POST variable or return default value.
//  *
//  * @param string $key     to look for
//  * @param mixed  $default value to set if key does not exists
//  *
//  * @return mixed value from POST or the default value
//  */
// function getPost($key, $default = null)
// {
//     return isset($_POST[$key])
//         ? $_POST[$key]
//         : $default;
// }



/**
 * Get value from POST variable or return default value.
 *
 * @param mixed $key     to look for, or value array
 * @param mixed $default value to set if key does not exists
 *
 * @return mixed value from POST or the default value
 */
function getPost($key, $default = null)
{
    if (is_array($key)) {
        // $key = array_flip($key);
        // return array_replace($key, array_intersect_key($_POST, $key));
        foreach ($key as $val) {
            $post[$val] = getPost($val);
        }
        return $post;

The variable $post seems to be defined by a foreach iteration on line 49. Are you sure the iterator is never empty, otherwise this variable is not defined?

    }

    return isset($_POST[$key])
        ? $_POST[$key]
        : $default;
}


/**
 * Check if key is set in POST.
 *
 * @param mixed $key     to look for
 *
 * @return boolean true if key is set, otherwise false
 */
function hasKeyPost($key)
{
    return array_key_exists($key, $_POST);
}



/**
 * Sanitize value for output in view.
 *
 * @param string $value to sanitize
 *
 * @return string beeing sanitized
 */
function esc($value)
{
    return htmlentities($value);
}



/**
 * Function to create links for sorting.
 *
 * @param string $column the name of the database column to sort by
 * @param string $route  prepend this to the anchor href
 *
 * @return string with links to order by column.
 */
function orderby($column, $route)
{
    return <<<EOD
<span class="orderby">
<a href="{$route}orderby={$column}&order=asc">&darr;</a>
<a href="{$route}orderby={$column}&order=desc">&uarr;</a>
</span>
EOD;
}



/**
 * Function to create links for sorting and keeping the original querystring.
 *
 * @param string $column the name of the database column to sort by
 * @param string $route  prepend this to the anchor href
 *
 * @return string with links to order by column.
 */
function orderby2($column, $route)
{
    $asc = mergeQueryString(["orderby" => $column, "order" => "asc"], $route);
    $desc = mergeQueryString(["orderby" => $column, "order" => "desc"], $route);

    return <<<EOD
<span class="orderby">
<a href="$asc">&darr;</a>
<a href="$desc">&uarr;</a>
</span>
EOD;
}



/**
 * Use current querystring as base, extract it to an array, merge it
 * with incoming $options and recreate the querystring using the
 * resulting array.
 *
 * @param array  $options to merge into exitins querystring
 * @param string $prepend to the resulting query string
 *
 * @return string as an url with the updated query string.
 */
function mergeQueryString($options, $prepend = "?")
{
    // Parse querystring into array
    $query = [];
    parse_str($_SERVER["QUERY_STRING"], $query);

    // Merge query string with new options
    $query = array_merge($query, $options);

    // Build and return the modified querystring as url
    return $prepend . http_build_query($query);
}



/**
 * Create a slug of a string, to be used as url.
 *
 * @param string $str the string to format as slug.
 *
 * @return str the formatted slug.
 */
function slugify($str)
{
    $str = mb_strtolower(trim($str));
    $str = str_replace(['å','ä'], 'a', $str);
    $str = str_replace('ö', 'o', $str);
    $str = preg_replace('/[^a-z0-9-]/', '-', $str);
    $str = trim(preg_replace('/-+/', '-', $str), '-');
    return $str;
}