Catch and handle PHP exceptions

Catch and handle PHP exceptions ~

The system comes with exception handling header("Content-type:text/html;charset=utf-8");
try
{
//Exception thrown when business processing error occurs.
$age = 130;
If ($age > 120) {
throw new Exception('Age cannot be greater than 120 years old.', 1001);
}
} catch (Exception $e) {
$err = [
‘code’ => $e->getCode(),
‘msg’ => $e->getMessage(),
'file' => $e->getFile(),
'line' => $e->getLine()
];
Echo json_encode($err);
}

Output: {"code":1001,"msg":"u5e74u9f84u4e0du80fdu5927u4e8e120u5c81u3002","file":"/data/mi/demo.php","line":11}Custom exception handling header("Content-type:text/html;charset=utf-8");
class proException extends Exception
{
//Customize the method according to business needs
/**
* Get error message
* @param int $type type 1=json 2=array
* * @return array
*/
Public function getErrorInfo($type = 2)
{
$err = [
‘code’ => $this->getCode(),
'Msg' = & gt; $ this- & gt; getMessage (),
‘line’ => $this->getLine()
];
If ($type == 1) {
return json_encode($err);
}
return }
}

try
{
//Exception thrown when business processing error occurs.
$age = 130;
If ($age > 120) {
throw new proException('Age cannot be greater than 120 years old.', 1001);
}
} catch (proException $e) {
$info = $e->getErrorInfo();
var_dump($info);
}

Output: array(4) { ["code"]=> int(1001) ["msg"]=> string(27) "Age cannot be greater than 120 years old." ["file"]=> string(17 ) "/data/mi/demo.php" ["line"]=> int(53) }

Catch multiple exceptions header("Content-type:text/html;charset=utf-8");class proException extends Exception
{
//Customize error methods according to business needs

/**
* Get error message
* @param int $type type 1=json 2=array
* * @return array
*/
Public function getErrorInfo($type = 2)
{
$err = [
'code' => $this->getCode(),
'Msg' = & gt; $ this- & gt; getMessage (),
‘line’ => $this->getLine()
];
If ($type == 1) {
return json_encode($err);
}
return }
}

try
{
If ($_GET['age'] > 100) {
throw new proException('Customized exception handling', 1002);
} else {
Throw new Exception('Exception handling of the system', 1002);
}
} catch (proException $e) {
$info = $e->getErrorInfo();
var_dump($info);
} catch (Exception $e) {
Echo $e->getMessage();
}

?age=110 Output: array(4) { ["code"]=> int(1002) ["msg"]=> string(24) "Customized exception handling" ["file"]=> string(17) "/data/mi/demo.php" ["line"]=> int(64) }
?age=20 Output: System exception handling.

Logging//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 Error code
* @param string $err_msg Error message
* @param string $err_file Error file
* @param int $err_line Error line number
* @return string
*/
function errorHandler($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
];
$log_path = '/data/mi/test.txt';
error_log(implode(' ',$log)."rn",3, $log_path);
//echo implode(' ',$log)."
";
}

/**
* Catching fatal errors
* @return string
*/
function fatalErrorHandler() {
$e = error_get_last();
Switch ($e['type']) {
Case 1:
errorHandler($e['type'], $e['message'], $e['file'], $e['line']);
break;
}
}

class DemoClass_1
{
Public function index()
{
//A warning error occurs here, start errorHandler
echo $undefinedVarible;
}
}

$demo_1 = new DemoClass_1();
//A warning error occurred here and was captured by errorHandler
$demo_1->index();
//A fatal error occurs and the script stops running and triggers fatalErrorHandler
$demo_2 = new DemoClass_2();
$demo_2->index();

After turning on echo, output:
[2016-08-07 09-01-34] | 8 | Undefined variable: undefinedVarible | /data/mi/demo.php | 126
[2016-08-07 09-01-34] | 1 | Class 'DemoClass_2' not found | /data/mi/demo.php | 134Remarks:
1. register_shutdown_function can also be used in API debugging to record each request value and return value to facilitate debugging.
2. The advantage of using "|" to split is that it is convenient to use awk to split the log.

Source: http://mp.weixin.qq.com/s?__biz=MjM5NDM4MDIwNw==&mid=2448834645&idx=1&sn=32c96f1344a270755a8e33a6f7ddc1e8#rd

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