doudilin1225 2014-08-28 08:27
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在错误处理程序中拦截和更改函数或方法参数值

In this comment in the PHP manual, a user suggested a class which would implement an error handler capable to implement primitive type hinting for PHP.

I understand how that class operates, however, I would like to know if it is possible to bring it to another level: instead of only checking the argument value to see if it matches the "typehint", would it be possible to replace the value with another one if it does match, and how?

I was thinking about something along the line of:

if(gettype($funcValue) == $typeHint) {
  // here replace $funcValue, for example $funcValue = new Example($funcValue);
}

and then have the function call proceed with the new value?

I have searched the manual but found nothing which could allow me to "hook" in the parameters' values, but it could be there and I simply didn't find it.

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