221 lines
No EOL
6.7 KiB
PHP
221 lines
No EOL
6.7 KiB
PHP
<?php
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class Database_Manager
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{
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public /*.Database.*/$db;
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function __construct(Database $db) {
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$this->db = $db;
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}
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public function ExecuteAction(/*.array.*/$action, $db_file = "") {
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switch($action["type"]) {
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case "dropTable":
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$this->DropTableQuery($action["table_name"], true);
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break;
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case "createTable":
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$constraints = isset($action["constraints"]) ? $action["constraints"] : NULL;
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$this->CreateTableQuery($action["table_name"], $action["fields"], $constraints);
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break;
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case "addColumn":
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$this->AddColumn($action["table_name"], $action["column_name"], $action["field"]);
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break;
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case "insert":
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$this->db->insertQuery($action["table_name"], $action["values"]);
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break;
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case "alterReference":
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$this->AlterReference($action["table"], $action["column"], $action["refTable"], $action["refColumn"]);
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break;
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case "renameColumn":
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$this->RenameColumn($action["table"], $action["old_name"], $action["new_name"]);
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break;
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case "executeFile":
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if ($this->db->isPostgres() && isset($action["pgsql"])) {
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$file = $action["pgsql"];
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} else {
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$file = $action["source"];
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}
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$stmtList = Tools_SQLStatementExtractor::extractFile(Path::join(dirname($db_file), $file));
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foreach($stmtList as $stmt) {
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$this->db->executeQuery($stmt);
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}
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break;
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default:
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throw new Exception("unknown action ". $action["type"] . PHP_EOL);
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}
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}
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public function DropTableQuery($table, $cascade=false) {
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$statement = "DROP TABLE IF EXISTS ".$table;
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if ($this->db->isPostgres()&&$cascade) {
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$statement = $statement." CASCADE";
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}
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$this->db->query($statement);
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}
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public function AlterReference($table,$column,$refTable,$refColumn) {
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$this->db->query("ALTER TABLE ".$table." ADD CONSTRAINT ".$table."_".$column."fk"." FOREIGN KEY (".$column.") REFERENCES ".$refTable." (".$refColumn.")");
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}
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//Извлечение информации о полях таблицы
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public function TableInfo($table) {
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$pg = $this->db->isPostgres();
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if ($pg) {
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throw new Exception("Not implemented for postgres");
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} else {
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$results = $this->db->fetchAllArray("PRAGMA table_info(".$table.");");
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if (empty($results)) {
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return null;
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}
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$fields = [];
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foreach ($results as $result) {
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$fields[$result["name"]] = [
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"type"=> $result["type"],
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"not_null"=> boolval($result["notnull"]),
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"constraint"=> ((boolean) $result["pk"]) ? "PRIMARY KEY" : null
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];
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}
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return $fields;
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}
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}
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public function RenameColumn($table, $old_name, $new_name) {
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$pg = $this->db->isPostgres();
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if ($pg) {
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$this->db->query("ALTER TABLE ".$table." RENAME COLUMN ".$old_name." TO ".$new_name);
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} else {
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$tmp_table = "tmp_" . $table;
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$this->DropTableQuery($tmp_table);
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$table_info = $this->TableInfo($table);
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if (isset($table_info[$new_name])) {
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return;
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}
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/*.array.*/$data = $this->DumpTable($table);
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$this->db->query("ALTER TABLE ".$table." RENAME TO ".$tmp_table.";");
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$table_info[$new_name] = $table_info[$old_name];
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unset($table_info[$old_name]);
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$this->CreateTableQuery($table,$table_info,null);
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foreach ($data as $row) {
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$values = $row['values'];
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$values[$new_name] = $values[$old_name];
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unset($values[$old_name]);
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$this->db->insertQuery($table, $values);
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}
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$this->DropTableQuery($tmp_table);
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}
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}
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//Обновление ключа serial после ручной вставки
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public function UpdateSerial($table,$column) {
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$this->db->query("SELECT setval(pg_get_serial_sequence('".$table."', '".$column."'), coalesce(max(".$column."),0) + 1, false) FROM ".$table);
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}
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public function Column_Definition($name,$data,$pg){
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$constraint = isset($data['constraint'])?" ".$data['constraint']:"";
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$references = "";
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if (isset($data['references'])) {
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$references = " REFERENCES ".$data['references'];
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}
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if (isset($data["not_null"]) && $data["not_null"])
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$constraint .=" NOT NULL";
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$type = $data['type'];
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if (!$pg) {
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if (strtolower($type)=="serial")
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$type = "integer";
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//if (strtolower($type)=="boolean")
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// $type = "integer";
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}
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return $name." ".$type.$references.$constraint;
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}
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public function AddColumn($table_name,$column_name,$field){
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$pg = $this->db->isPostgres();
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$q = "ALTER TABLE ".$table_name." ADD COLUMN ".
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$this->Column_Definition($column_name, $field, $pg);
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$this->db->query($q);
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}
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function getConstraintDef(/*.array.*/$c) {
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if ($c['type'] == 'unique') {
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return "UNIQUE(" . implode(", ", $c['fields']) . ")";
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}
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return "";
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}
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//CreateTableQuery('users',['id'=>['type'=>'integer','constraint'=>'PRIMARY KEY']])
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public function CreateTableQuery($table, $fields, $constraints) {
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$pg = $this->db->isPostgres();
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if ($constraints) {
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if (is_array($constraints)) {
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$constraints = $this->getConstraintDef($constraints);
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}
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$constraints = ", " . $constraints;
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}
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$statement = "CREATE TABLE $table (" . implode(",",
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array_map(function($name,$data) use ($pg) {
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return $this->Column_Definition($name,$data,$pg);
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}, array_keys($fields), array_values($fields))
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) . " " . $constraints . ")";
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$this->db->query($statement);
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}
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public function DumpTable($table_name) {
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$pg = $this->db->isPostgres();
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/*.array.*/$result = array();
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/*.array.*/$data = $this->db->fetchAllArray("SELECT * FROM ".$table_name.";");
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if (!$pg) {
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$table_fields = $this->TableInfo($table_name);
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foreach ($table_fields as $name => $value) {
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$type = strtolower($value['type']);
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if ($type == "boolean") {
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foreach ($data as &$row) {
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/*.array.*/$row = $row;
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if (isset($row[$name])) {
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$row[$name] = boolval($row[$name]);
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}
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}
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}
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}
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}
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foreach ($data as $r) {
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$result[] = array(
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"type" => "insert",
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"table_name" => $table_name,
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"values" => $r
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);
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}
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return $result;
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}
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public function GetAllTableNames() {
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$result = [];
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if ($this->db->isPostgres()) {
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$query = "SELECT table_name as name FROM information_schema.tables WHERE table_schema='public'";
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} else {
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$query = "SELECT * FROM sqlite_master WHERE type='table'";
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}
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$tables = $this->db->fetchAllArray($query);
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foreach ($tables as $table) {
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$result[] = $table['name'];
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}
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return $result;
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}
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public function DumpInserts() {
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$table_names = $this->GetAllTableNames();
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$result = array();
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foreach ($table_names as $table_name) {
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$result = array_merge($result, $this->DumpTable($table_name));
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}
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return $result;
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}
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} |