關(guān)于下面的代碼，我怎樣才能在 PHP 中不拋出異常的情況下進(jìn)入finally？try { $db = DataSource::getConnection(); if (some condition here is TRUE) { // go to finally without throw an exception } $stmt = $db->prepare($sql); $stmt->saveMyData();} catch (Exception $e) { die($e->getMessage());} finally { $db = null;}
1 回答
喵喵時(shí)光機(jī)
TA貢獻(xiàn)1846條經(jīng)驗(yàn) 獲得超7個(gè)贊
請(qǐng)不要這樣做，但這里有一個(gè)選項(xiàng)：
try {
if (TRUE){
goto ugh;
}
echo "\ndid not break";
ugh:
} catch (Exception $e){
echo "\ndid catch";
} finally {
echo "\ni'm so tired";
}
我強(qiáng)烈建議不要使用goto. 我認(rèn)為如果您使用goto.
我建議：
try {
if (TRUE){
echo "\nThat's better";
} else {
echo "\ndid not break";
}
} catch (Exception $e){
echo "\ndid catch";
} finally {
echo "\ni'm so tired";
}
您只需將其余部分包裝try成 anelse即可跳過(guò)它。
另一種選擇是聲明一個(gè) finally 函數(shù)，調(diào)用它，然后返回。
//I'm declaring as a variable, as to not clutter the declared methods
//If you had one method across scripts, naming it `function doFinally(){}` could work well
$doFinally = function(){};
try {
if (TRUE){
$doFinally();
return;
}
echo "\ndid not break";
} catch (Exception $e){
echo "\ndid catch";
} finally {
$doFinally();
}
如果您需要繼續(xù)腳本，您可以聲明$doFinally如下內(nèi)容：
$doFinally = function($reset=FALSE){
static $count;
if ($reset===TRUE){
$count = 0;
return;
} else if ($count===NULL)$count = 0;
else if ($count>0)return;
}
然后在finally塊之后，您可以調(diào)用$doFinally(TRUE)以將其重置為下一個(gè)try/catch
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