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<?php |
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/* For licensing terms, see /license.txt */ |
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/** |
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* This is a library with some functions to sort tabular data. |
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*/ |
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define('SORT_DATE', 3); |
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define('SORT_IMAGE', 4); |
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/** |
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* Class TableSort. |
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*/ |
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class TableSort |
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{ |
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/** |
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* Sorts 2-dimensional table. |
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* |
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* @param array $data the data to be sorted |
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* @param int $column The column on which the data should be sorted (default = 0) |
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* @param int $direction The direction to sort (SORT_ASC (default) or SORT_DESC) |
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* @param int $type How should data be sorted (SORT_REGULAR, SORT_NUMERIC, |
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* SORT_STRING,SORT_DATE,SORT_IMAGE) |
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* |
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* @return array The sorted dataset |
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* |
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* @author [email protected] |
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*/ |
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public static function sort_table( |
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$data, |
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$column = 0, |
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$direction = SORT_ASC, |
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$type = SORT_REGULAR |
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) { |
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if (!is_array($data) || empty($data)) { |
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return []; |
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} |
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$column = (int) $column; |
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if (!in_array($direction, [SORT_ASC, SORT_DESC])) { |
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// Probably an attack |
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return $data; |
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} |
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if (SORT_REGULAR == $type) { |
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$type = SORT_STRING; |
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if (self::is_image_column($data, $column)) { |
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$type = SORT_IMAGE; |
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} elseif (self::is_date_column($data, $column)) { |
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$type = SORT_DATE; |
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} elseif (self::is_numeric_column($data, $column)) { |
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$type = SORT_NUMERIC; |
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} |
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} |
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$function = self::getSortFunction($type, $direction, $column); |
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// Sort the content |
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usort($data, $function); |
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return $data; |
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} |
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/** |
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* @param $type |
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* @param $direction |
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* @param $column |
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* |
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* @return Closure |
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*/ |
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public static function getSortFunction($type, $direction, $column) |
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{ |
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$compareOperator = SORT_ASC == $direction ? '>' : '<='; |
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switch ($type) { |
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case SORT_NUMERIC: |
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$function = function ($a, $b) use ($column, $compareOperator) { |
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$colA = strip_tags($a[$column]); |
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$colB = strip_tags($b[$column]); |
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if ('>' === $compareOperator && $colA > $colB) { |
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return 1; |
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} |
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return $colA < $colB ? -1 : 0; |
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}; |
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break; |
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case SORT_IMAGE: |
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$function = function ($a, $b) use ($column, $compareOperator) { |
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$result = api_strnatcmp( |
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api_strtolower(strip_tags($a[$column], "<img>")), |
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api_strtolower(strip_tags($b[$column], "<img>")) |
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); |
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if ('>' === $compareOperator) { |
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$result = api_strnatcmp( |
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api_strtolower(strip_tags($a[$column], "<img>")), |
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api_strtolower(strip_tags($b[$column], "<img>")) |
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); |
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} |
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return $result; |
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}; |
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break; |
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case SORT_DATE: |
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$function = function ($a, $b) use ($column, $compareOperator) { |
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$dateA = strtotime(strip_tags($a[$column])); |
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$dateB = strtotime(strip_tags($b[$column])); |
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if ('>' === $compareOperator && $dateA > $dateB) { |
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return 1; |
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} |
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return $dateA < $dateB ? -1 : 0; |
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}; |
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break; |
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case SORT_STRING: |
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default: |
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$function = function ($a, $b) use ($column, $compareOperator) { |
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$result = api_strnatcmp( |
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api_strtolower(strip_tags($a[$column])), |
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api_strtolower(strip_tags($b[$column])) |
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); |
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if ('>' === $compareOperator) { |
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$result = api_strnatcmp( |
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api_strtolower(strip_tags($a[$column])), |
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api_strtolower(strip_tags($b[$column])) |
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); |
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} |
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return $result; |
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}; |
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break; |
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} |
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return $function; |
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} |
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/** |
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* Sorts 2-dimensional table. It is possible changing the columns that will be |
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* shown and the way that the columns are to be sorted. |
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* |
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* @param array $data the data to be sorted |
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* @param int $column The column on which the data should be sorted (default = 0) |
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* @param int $direction The direction to sort (SORT_ASC (default) or SORT_DESC) |
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* @param array $column_show The columns that we will show in the table |
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* i.e: $column_show = array('1','0','1') we will show the 1st and the 3th column. |
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* @param array $column_order Changes how the columns will be sorted |
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* ie. $column_order = array('0','3','2','3') The column [1] will be sorted like the column [3] |
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* @param int $type How should data be sorted (SORT_REGULAR, SORT_NUMERIC, SORT_STRING, SORT_DATE, SORT_IMAGE) |
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* |
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* @return array The sorted dataset |
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* |
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* @author [email protected] |
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*/ |
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public static function sort_table_config( |
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$data, |
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$column = 0, |
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$direction = SORT_ASC, |
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$column_show = null, |
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$column_order = null, |
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$type = SORT_REGULAR, |
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$doc_filter = false |
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) { |
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if (!is_array($data) || empty($data)) { |
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return []; |
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} |
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$column = (int) $column; |
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if (!in_array($direction, [SORT_ASC, SORT_DESC])) { |
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// Probably an attack |
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return $data; |
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} |
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// Change columns sort |
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// Here we say that the real way of how the columns are going to be order is manage by the $column_order array |
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if (is_array($column_order)) { |
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$column = isset($column_order[$column]) ? $column_order[$column] : $column; |
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} |
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if (SORT_REGULAR == $type) { |
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if (self::is_image_column($data, $column)) { |
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$type = SORT_IMAGE; |
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} elseif (self::is_date_column($data, $column)) { |
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$type = SORT_DATE; |
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} elseif (self::is_numeric_column($data, $column)) { |
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$type = SORT_NUMERIC; |
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} else { |
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$type = SORT_STRING; |
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} |
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} |
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//This fixes only works in the document tool when ordering by name |
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if ($doc_filter && in_array($type, [SORT_STRING])) { |
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$folder_to_sort = []; |
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$new_data = []; |
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if (!empty($data)) { |
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foreach ($data as $document) { |
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if ('folder' === $document['type']) { |
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$docs_to_sort[$document['id']] = api_strtolower($document['name']); |
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} else { |
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$folder_to_sort[$document['id']] = api_strtolower($document['name']); |
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} |
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$new_data[$document['id']] = $document; |
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} |
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if (SORT_ASC == $direction) { |
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if (!empty($docs_to_sort)) { |
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api_natsort($docs_to_sort); |
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} |
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if (!empty($folder_to_sort)) { |
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api_natsort($folder_to_sort); |
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} |
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} else { |
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if (!empty($docs_to_sort)) { |
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api_natrsort($docs_to_sort); |
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} |
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if (!empty($folder_to_sort)) { |
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api_natrsort($folder_to_sort); |
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} |
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} |
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$new_data_order = []; |
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if (!empty($docs_to_sort)) { |
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foreach ($docs_to_sort as $id => $document) { |
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if (isset($new_data[$id])) { |
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$new_data_order[] = $new_data[$id]; |
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} |
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} |
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} |
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if (!empty($folder_to_sort)) { |
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foreach ($folder_to_sort as $id => $document) { |
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if (isset($new_data[$id])) { |
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$new_data_order[] = $new_data[$id]; |
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} |
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} |
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} |
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$data = $new_data_order; |
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} |
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} else { |
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$function = self::getSortFunction($type, $direction, $column); |
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// Sort the content |
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usort($data, $function); |
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} |
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if (is_array($column_show) && !empty($column_show)) { |
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// We show only the columns data that were set up on the $column_show array |
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$new_order_data = []; |
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$count_data = count($data); |
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$count_column_show = count($column_show); |
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for ($j = 0; $j < $count_data; $j++) { |
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$k = 0; |
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for ($i = 0; $i < $count_column_show; $i++) { |
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if ($column_show[$i]) { |
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$new_order_data[$j][$k] = $data[$j][$i]; |
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} |
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$k++; |
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} |
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} |
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// Replace the multi-arrays |
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$data = $new_order_data; |
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} |
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return $data; |
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} |
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/** |
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* Checks whether a column of a 2D-array contains only numeric values. |
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* |
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* @param array $data The data-array |
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* @param int $column The index of the column to check |
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* |
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* @return bool TRUE if column contains only dates, FALSE otherwise |
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* |
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* @todo Take locale into account (eg decimal point or comma ?) |
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* |
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* @author [email protected] |
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*/ |
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private static function is_numeric_column(&$data, $column) |
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{ |
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$is_numeric = true; |
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foreach ($data as $index => &$row) { |
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$is_numeric &= is_numeric(strip_tags($row[$column])); |
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if (!$is_numeric) { |
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break; |
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} |
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} |
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return $is_numeric; |
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} |
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293
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/** |
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* Checks whether a column of a 2D-array contains only dates (GNU date syntax). |
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* |
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* @param array $data The data-array |
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* @param int $column The index of the column to check |
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* |
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* @return bool TRUE if column contains only dates, FALSE otherwise |
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* |
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* @author [email protected] |
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*/ |
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private static function is_date_column(&$data, $column) |
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{ |
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$is_date = true; |
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foreach ($data as $index => &$row) { |
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if (strlen(strip_tags($row[$column])) != 0) { |
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$check_date = strtotime(strip_tags($row[$column])); |
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// strtotime Returns a timestamp on success, FALSE otherwise. |
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// Previous to PHP 5.1.0, this function would return -1 on failure. |
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$is_date &= ($check_date != -1 && $check_date); |
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} else { |
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$is_date &= false; |
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} |
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if (!$is_date) { |
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break; |
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} |
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} |
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320
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return $is_date; |
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|
321
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} |
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323
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/** |
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* Checks whether a column of a 2D-array contains only images (<img src="path/file.ext" alt=".."/>). |
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* |
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* @param array $data The data-array |
327
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* @param int $column The index of the column to check |
328
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* |
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* @return bool TRUE if column contains only images, FALSE otherwise |
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* |
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* @author [email protected] |
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*/ |
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private static function is_image_column(&$data, $column) |
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{ |
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$is_image = true; |
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foreach ($data as $index => &$row) { |
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if (isset($row[$column])) { |
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// at least one img-tag |
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$is_image &= strlen(trim(strip_tags($row[$column], '<img>'))) > 0; |
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// and no text outside attribute-values |
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$is_image &= 0 == strlen(trim(strip_tags($row[$column]))); |
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} |
343
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if (!$is_image) { |
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break; |
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} |
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} |
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|
348
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return $is_image; |
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|
349
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} |
350
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} |
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