The difference between error and exception in PHP and its application _php tutorial

The difference between error and exception in PHP and its application

This article mainly introduces the difference between error and exception in PHP, and the application, the need for friends can refer to the following

The difference between error and exception check the online data is mostly Java interpretation, it seems that PHP exception processing process and Java almost

The object inheritance structure in Java is as follows:

Object---->throwable--------> Exception----> RuntimeException | Error

Error is unchecked type exception is divided into checked and unchecked types

and treats the anomaly and the error as if the program is not functioning properly.

If you distinguish between exceptions and errors:

Exception: Non-fatal. Try{}catche (Exception e) {} Execution of a try module is a test run, and the code executes an error (Non-fatal error) during Operation Catche

The effect of the exception is similar to the following code:

if (mysql_connect (' 127.0.0.1 ', ' root ', ' 321321 '))

{

echo ' Connect to database successfully ';

Other code ...

}

Else

{

echo ' Connect database error ';

return false;

}

Exceptions can be handled easily using exception handling scenarios. As the following code can handle many exceptions at once

Try

{

mysql_connect (' 127.0.0.1 ', ' root ', ' 321321 ');

Other code-want to execute

}catche (Exception $e) {

Print_r ($e);

}

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