Php 如何抛出异常，但在消息中包含参数？

最好的方法是什么：

$params = array ('a' => 'b', 'c' => 'd'); // etc etc

throw new Exception(
   "Could not do something because params << insert parameters >> was bad",  
    $code
 );

您可以使用sprintf函数

---

如果数组值/索引的计数为常量，则可以执行以下操作：

throw new Exception(
    sprintf("Could not do something because params {$params['a']}, {$params['b']} was bad"),  
    $code
);

如果数组中有不同数量的值，可以如下处理：

"Could not do something because params: a = b, c = d was bad",  

throw new Exception(
    sprintf("Could not do something because params " . implode(', ', $params) . " was bad"),  
    $code
);

如果还需要为每个值包含数组键，则必须执行类似的操作：

$excParams = array();
foreach ($params as $key => $val) {
    $excParams[] = "{$key} = {$val}";
}

throw new Exception(
    sprintf("Could not do something because params " . implode(', ', $excParams) . " was bad"),  
    $code
);

$excParams = array();
foreach ($params as $key => $val) {
    $excParams[] = "{$key} = {$val}";
}

throw new Exception(
    sprintf("Could not do something because params " . implode(', ', $excParams) . " was bad"),  
    $code
);