我创建了一个PHP脚本，它将检查连接的数据库中是否有一些预定义的表，如果表没有，那么脚本将创建这些表。
在这个脚本中，我使用switch ... case来创建表，这样可以解决任何错误。
现在我想做的是检查switch ... case是否以任何错误结束。如果没有错误，那么我想触发另一组或sql语句，这些语句将创建一些每天要运行的任务。
这是我的表检查和创建PHP部分，
<?php
//This is the array that contains all the table names
$tableNames = array(
'catdb', 'clientdb', 'qcerrors', 'searchterm', 'teams', 'tempdb', 'userlogin', 'userroles', 'usertimetrack'
);
//I'm using this for loop to loop through the array and create the tables
//if they doesn't exists.
for ($i = 0; $i < count($tableNames); $i++) {
$tableCheck = $dbConnect->query("SHOW TABLES LIKE '" . $tableNames[$i] . "'");
if ($tableCheck->rowCount() > 0) {
echo $tableNames[$i] . " .... Exists <br />";
} else {
$tblName = $tableNames[$i];
switch ($tblName) {
case "catdb":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `catdb` (
`catId` int(100) NOT NULL AUTO_INCREMENT,
`uId` int(100) NOT NULL,
`Catagory` varchar(100) NOT NULL,
`createDate` varchar(100) NOT NULL,
PRIMARY KEY (`catId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
case "clientdb":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `clientdb` (
`clientId` int(100) NOT NULL AUTO_INCREMENT,
`catId` varchar(100) NOT NULL,
`uId` int(100) NOT NULL,
`Client` varchar(100) NOT NULL,
`cDate` varchar(100) NOT NULL,
PRIMARY KEY (`clientId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
case "qcerrors":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `qcerrors` (
`qcId` int(100) NOT NULL AUTO_INCREMENT,
`qcError` varchar(100) NOT NULL,
`createdBy` varchar(100) DEFAULT NULL,
`createdOn` varchar(100) DEFAULT NULL,
PRIMARY KEY (`qcId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
case "searchterm":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `searchterm` (
`sId` int(100) NOT NULL AUTO_INCREMENT,
`sDate` varchar(100) NOT NULL,
`sUid` int(100) NOT NULL,
`searchedBy` int(100) NOT NULL,
PRIMARY KEY (`sId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
case "teams":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `teams` (
`tId` int(100) NOT NULL AUTO_INCREMENT,
`TeamName` varchar(100) NOT NULL,
`tlName` varchar(100) DEFAULT NULL,
`tlSet` varchar(100) NOT NULL,
PRIMARY KEY (`tId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
case "tempdb":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `tempdb` (
`tempId` int(100) NOT NULL AUTO_INCREMENT,
`uId` int(100) NOT NULL,
`tId` int(100) NOT NULL,
`catId` int(100) NOT NULL,
`clientId` int(100) NOT NULL,
`startTime` varchar(100) NOT NULL,
`Status` varchar(100) NOT NULL,
PRIMARY KEY (`tempId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
case "userlogin":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `userlogin` (
`uId` int(100) NOT NULL AUTO_INCREMENT,
`uCreateDate` varchar(100) NOT NULL,
`createdBy` int(100) NOT NULL,
`fName` varchar(100) NOT NULL,
`lName` varchar(100) NOT NULL,
`uName` varchar(100) NOT NULL,
`pWord` varchar(100) NOT NULL,
`uTeam` int(100) NOT NULL,
`uRole` varchar(100) NOT NULL,
PRIMARY KEY (`uId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
case "userroles":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `userroles` (
`urId` int(100) NOT NULL AUTO_INCREMENT,
`userRole` varchar(100) NOT NULL,
PRIMARY KEY (`urId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
case "usertimetrack":
try {
$tblCreate = "CREATE TABLE IF NOT EXISTS `usertimetrack` (
`utId` int(100) NOT NULL AUTO_INCREMENT,
`jDate` varchar(100) NOT NULL,
`usrId` int(100) NOT NULL,
`Category` varchar(100) NOT NULL,
`utClient` varchar(100) NOT NULL,
`jType` varchar(100) NOT NULL,
`startTime` varchar(100) NOT NULL,
`endTime` varchar(100) NOT NULL,
`timeSpent` varchar(100) NOT NULL,
`Volume` int(100) NOT NULL,
`qcErrorId` varchar(100) NOT NULL,
`noOfProductLines` int(100) DEFAULT NULL,
`Remarks` varchar(1000) DEFAULT NULL,
PRIMARY KEY (`utId`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1";
$dbConnect->exec($tblCreate);
echo $tblName . " .... Created OK <br />";
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
break;
default:
echo $tblName . " this table is not part of this system.<br />";
}
}
}
?>
现在上述代码运行后没有出现任何错误，我想在SQL语句下运行，这将创建任务。
<?php
$timeNow = date("Y-m-d H:i:s"); //To get the current time
//Set the event scheduler status from OFF to ON
$dbConnect->exec("SET GLOBAL event_scheduler = ON");
//Creates the daily task 1 to truncate searchterm table
$createTask1 = "CREATE DEFINER= '" . $dbUser . "'@`%` EVENT `searcTerm Table Clean` ON SCHEDULE EVERY 1 DAY STARTS '" . $timeNow . "' ON COMPLETION NOT PRESERVE ENABLE DO TRUNCATE TABLE searchterm";
$dbConnect->exec($createTask1);
//Creates the daily task 1 to truncate tempdb table
$createTask2 = "CREATE DEFINER= '" . $dbUser . "'@`%` EVENT `EmptyData` ON SCHEDULE EVERY 1 DAY STARTS '" . $timeNow . "' ON COMPLETION NOT PRESERVE ENABLE DO TRUNCATE TABLE tempdb";
$dbConnect->exec($createTask2);
?>
我确实搜索了Google和SO，但没有看到答案，这就是为什么我决定提问。我希望我已经向社群明确了我的问题，如果有的话，有人可以说明如何做以检查switch ... case结束没有任何错误。
答案 0 :(得分：2)
在你的代码中，我看到catch块中有很多回声：
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
}
在switch语句之前，你可以创建一个错误数组：
$errors = array();
然后，在catch块中，如果愿意，可以保留echo，但是将错误消息添加到errors数组中：
} catch (PDOException $e) {
echo $tblCreate . "<br>" . $e->getMessage();
$errors[] = $tblCreate.' - '.$e->getMessage();
}
最后，当代码运行完毕后，您可以通过计算错误数组来检查错误：
if (count($errors) == 0) {
// code ran successfully
} else {
// fail
}