h5p-php-library/h5p-metadata.class.php

85 lines
1.8 KiB
PHP

<?php
/**
* Utility class for handling metadata
*/
abstract class H5PMetadata {
const FIELDS = array(
'authors' => array(
'type' => 'json'
),
'changes' => array(
'type' => 'json'
),
'source' => array(
'type' => 'text',
'maxLength' => 255
),
'license' => array(
'type' => 'text',
'maxLength' => 32
),
'licenseVersion' => array(
'type' => 'text',
'maxLength' => 10
),
'licenseExtras' => array(
'type' => 'text',
'maxLength' => 5000
),
'authorComments' => array(
'type' => 'text',
'maxLength' => 5000
),
'yearFrom' => array(
'type' => 'int'
),
'yearTo' => array(
'type' => 'int'
)
);
/**
* Make the metadata into an associative array keyed by the property names
* @param mixed $metadata Array or object containing metadata
* @return array
*/
public static function toDBArray($metadata, &$types = array()) {
$fields = array();
if (!is_array($metadata)) {
$metadata = (array) $metadata;
}
foreach (self::FIELDS as $key => $config) {
if (isset($metadata[$key])) {
$value = $metadata[$key];
$db_field_name = strtolower(preg_replace('/(?<!^)[A-Z]/', '_$0', $key));
switch ($config['type']) {
case 'text':
if (strlen($value) > $config['maxLength']) {
$value = mb_substr($value, 0, $config['maxLength']);
}
$types[] = '%s';
break;
case 'int':
$value = ($value !== null) ? intval($value): null;
$types[] = '%i';
break;
case 'json':
$value = json_encode($value);
$types[] = '%s';
break;
}
$fields[$db_field_name] = $value;
}
}
return $fields;
}
}