php：try-catch 没有捕获所有异常
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php: try-catch not catching all exceptions
提问by Marcos
I'm trying to do the following:
我正在尝试执行以下操作：
try {
// just an example
$time = 'wrong datatype';
$timestamp = date("Y-m-d H:i:s", $time);
} catch (Exception $e) {
return false;
}
// database activity here
In short: I initialize some variables to be put in the database. If the initialization fails for whatever reason - e.g. because $time is not the expected format - I want the method to return false and not input wrong data into the database.
简而言之：我初始化了一些要放入数据库的变量。如果由于某种原因初始化失败 - 例如因为 $time 不是预期的格式 - 我希望该方法返回 false 并且不会将错误的数据输入到数据库中。
However, errors like this are not caught by the 'catch'-statement, but by the global error handler. And then the script continues.
但是，像这样的错误不是由 'catch' 语句捕获的，而是由全局错误处理程序捕获的。然后脚本继续。
Is there a way around this? I just thought it would be cleaner to do it like this instead of manually typechecking every variable, which seems ineffective considering that in 99% of all cases nothing bad happens.
有没有解决的办法？我只是认为这样做会更干净，而不是手动对每个变量进行类型检查，考虑到在 99% 的所有情况下都没有发生任何不好的事情，这似乎是无效的。
采纳答案by Federkun
Solution #1
解决方案#1
Use ErrorExceptionto turn errors into exceptions to handle:
使用ErrorException将错误转化为异常来处理：
function exception_error_handler($errno, $errstr, $errfile, $errline ) {
throw new ErrorException($errstr, $errno, 0, $errfile, $errline);
}
set_error_handler("exception_error_handler");
Solution #2
解决方案#2
try {
// just an example
$time = 'wrong datatype';
if (false === $timestamp = date("Y-m-d H:i:s", $time)) {
throw new Exception('date error');
}
} catch (Exception $e) {
return false;
}
回答by Nabi K.A.Z.
try {
// call a success/error/progress handler
} catch (\Throwable $e) { // For PHP 7
// handle $e
} catch (\Exception $e) { // For PHP 5
// handle $e
}
回答by Luca C.
The shorter that I have found:
我发现的较短：
set_error_handler(function($errno, $errstr, $errfile, $errline ){
throw new ErrorException($errstr, $errno, 0, $errfile, $errline);
});
Makes all errors becoming instance of catchable ErrorException
使所有错误成为可捕获的实例 ErrorException
回答by Amal Magdy
catch(Throwable $e) works
catch ( Throwable $e){
$msg = $e-> getMessage();
}
catch(Throwable $e) 有效
catch ( Throwable $e){
$msg = $e-> getMessage();
}
