How to catch errors in PHP

This article mainly introduces the method of catching errors in PHP, which has certain reference value. Now I share it with you. Friends in need can refer to it.

PHP catching errors

• Disable error output

error_reporting(0);

• Set error handler

set_error_handler('errorHandler');

• function to run at the end of the script

register_shutdown_function('fatalErrorHandler');

• Error handling

/**
 * @param int    $err_no      错误代码
 * @param string $err_msg  错误信息
 * @param string $err_file    错误文件
 * @param int    $err_line     错误行号
 * @return string
 */
function errorHandler($err_no = 0, $err_msg = '', $err_file = '', $err_line = 0)
{
    $log = [
        '['.date('Y-m-d h-i-s').']',
        '|',
        $err_no,
        '|',
        $err_msg,
        '|',
        $err_file,
        '|',
        $err_line
    ];
    $log_path = './test.txt';
    error_log(implode(' ',$log)."\r\n",3, $log_path);
}

• Catching fatal errors

function fatalErrorHandler() {
    $e = error_get_last();

    var_export($e);
    switch ($e['type']) {
        case 1:
            errorHandler($e['type'], $e['message'], $e['file'], $e['line']);
            break;
    }
}

class DemoClass_1
{
    public function index()
    {
        //这里发生一个警告错误，出发errorHandler
        echo $undefinedVarible;
    }
}

• A warning error occurred here and was captured by errorHandler

$demo_1 = new DemoClass_1();
$demo_1->index();

• A fatal error occurs and the script stops running and triggers fatalErrorHandler

$demo_2 = new DemoClass_2();
$demo_2->index();

After opening test.txt, the output is:

[2018-06-12 05-49-11] | 8 | Undefined variable: undefinedVarible | /Users/darry/htdocs/test.php | 57
[2018-06-12 05-49-11] | 1 | Uncaught Error: Class 'DemoClass_2' not found in /Users/darry/htdocs/test.php:67
Stack trace:
#0 {main}
  thrown | /Users/darry/htdocs/test.php | 67

The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!

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