PHP+MySQL統計該庫中每個表的記錄數並按遞減順序排列

本文執行個體講述了PHP+MySQL統計該庫中每個表的記錄數並按遞減順序排列的方法。分享給大家供大家參考，具體如下：

這是一段簡單的代碼，可實現統計該資料庫中每個表的記錄數，並按遞減順序排列的功能

$host = '127.0.0.1';$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 $e->getMessage();}//有查詢結果function query($sql){  global $pdo;  $stmt = $pdo->query($sql);  $data = $stmt->fetchAll(Pdo::FETCH_BOTH);  return $data;}//無查詢結果function execute($sql){  global $pdo;  $affect_rows = $pdo->query($sql);  return $affect_rows;//影響條數}$tables = query("show tables");$sort_data = array();foreach($tables as $table){  //表記錄條數  $count_sql = "select count(*) as num from {$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);}

希望本文所述對大家PHP程式設計有所協助。