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本文實(shí)例講述了PHP實(shí)現(xiàn)的mysql主從數(shù)據(jù)庫狀態(tài)檢測(cè)功能。分享給大家供大家參考，具體如下：

實(shí)例：

<?php
/**
 * 檢測(cè)多個(gè)主從數(shù)據(jù)庫是否掛掉
 * 建立從數(shù)據(jù)庫$slave_db的二維數(shù)組，內(nèi)容包含每個(gè)從服務(wù)器的配置數(shù)據(jù)
 */
header("Content-Type: text/html; charset=utf-8");
set_time_limit(0);
$slave_db = array(
  'db1'=>array(
    'hostname' => '127.0.0.1',
    'port' => 3306,
    'database' => 'test',
    'username' => 'root',
    'password' => '111111',
    'charset' => 'utf8',
  ),
  'db2'=>array(
    'hostname' => '127.0.0.2',
    'port' => 3306,
    'database' => 'test',
    'username' => 'root',
    'password' => '111111',
    'charset' => 'utf8',
  ),
);
$content = '';
foreach ($slave_db as $db_key) {
  $host = $db_key['hostname'];
  $port = $db_key['port'];
  $db_user = $db_key['username'];
  $db_pass = $db_key['password'];
  $slave_link = mysql_connect($host,$db_user,$db_pass);
  if(mysql_errno()) {
    $content .= "從數(shù)據(jù)庫( $host )無法連接 ！ <br/>";
    $content .= mysql_error() . "<br/>";
    continue;
  }
  $sql = "show slave status";
  $result = mysql_query($sql, $slave_link);
  $row = mysql_fetch_assoc($result);
  $Slave_IO_Running = $row['Slave_IO_Running'];
  $Slave_SQL_Running = $row['Slave_SQL_Running'];
  if ('Yes' == $Slave_IO_Running && 'Yes' == $Slave_SQL_Running) {
  } else {
    $content .= "從數(shù)據(jù)庫( $host )掛掉了！ <br/>";
  }
  mysql_free_result($result);
  mysql_close($slave_link);
}
//若報(bào)錯(cuò)信息不為空，發(fā)送報(bào)錯(cuò)郵件
if(!empty($content)) {
  $title = '主從數(shù)據(jù)庫狀態(tài)檢測(cè)報(bào)錯(cuò) ';
  $content = date("Y-m-d H:i:s",time()) . "<br/>" . $content;
  $sendurl = "http://localhost/api.ftrend.com/test.php?title=".$title."&content=".$content;
  $result = file_get_contents($sendurl);
  if('ok' != $result) {
    $message = date("Y-m-d H:i:s",time()).'slaveStatus.php主從數(shù)據(jù)庫狀態(tài)檢測(cè)報(bào)錯(cuò),郵件發(fā)送失敗!'."n";
    $content = str_replace("<br/>", "n", $content);
    $message .= $content;
    error_log($message,3,"error.log");
  }
}

<?php
$title = $_GET['title'];
$content = $_GET['content'];
$content = str_replace("<br/>", "n", $content);
error_log($title."n",3,'error.log');
error_log($content."n",3,'error.log');
echo 'ok';

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希望本文所述對(duì)大家PHP程序設(shè)計(jì)有所幫助。