本文实例讲述了PHP+MySQL统计该库中每个表的记录数并按递减顺序排列的方法。分享给大家供大家参考，具体如下：

这是一段简单的代码，可实现统计该数据库中每个表的记录数，并按递减顺序排列的功能

$host = '127.0.0.1'; $port = 3306; $dbname = 'test'; $username = 'root'; $password = ''; function ee($p) { if(PHP_SAPI == 'cli') { echo "n"; }else{ echo "<pre>"; } print_r($p); if(PHP_SAPI == 'cli') { echo "n"; }else{ echo "<pre>"; } } $dsn = "mysql:host={$host};port={$port};dbname={$dbname}"; $opts = array(PDO::ATTR_ERRMODE=>PDO::ERRMODE_EXCEPTION, PDO::ATTR_AUTOCOMMIT=>0); try { $pdo = new PDO($dsn, $username, $password, $opts); }catch(PDOException $e){ echo $e->getMessage(); } //有查询结果 function query($sql) { global $pdo; $stmt = $pdo->query($sql); $data = $stmt->fetchAll(Pdo::FETCH_BOTH); return $data; } //无查询结果 function execute($sql) { global $pdo; $affect_rows = $pdo->query($sql); return $affect_rows;//影响条数 } $tables = query("show tables"); $sort_data = array(); foreach($tables as $table) { //表记录条数 $count_sql = "select count(*) as num from {$table[0]}"; $stmt = $pdo->query($count_sql); $info = $stmt->fetch(Pdo::FETCH_BOTH); $pad_table = str_pad($table[0], 25, ' '); $sort_data[] = array('table'=>$pad_table, 'num'=>$info['num']); $sort_index[] = $info['num']; } array_multisort($sort_index, SORT_DESC, $sort_data); foreach($sort_data as $val) { $row_str = <<<eof {$val['table']} [{$val['num']}] eof; ee($row_str); }

希望本文所述对大家PHP程序设计有所帮助。