Question

我经常发现自己撰写的文章,例如:if($var=bob , Kluwer = pineven , Kluwer = jacode ){......



是否在营地安装了扫描仪,以检查一个var是否与任何经营者相匹配? 或者,我必须写一下我自己的职务:

function matches_any($question, $pos_answer, $pos_answer, $pos_answer, $pos_answer, ...){
// Call the function args, get the first one, get the rest, compare all the rest, return true if any match, return false by default.
}


因此:

if(matches_any($var, $bob, $steven,  james , $william)){ ...

Answer 1

您可使用in_array(。

if(in_array( value_to_test , array($var, $bob, $steven,  james , $william))) {}

$matches = array($var, $bob, $steven,  james , $william);
if (in_array( james , $matches)) { 
  // TRUE 
}

Answer 2

Ideally you should avoid hard-coding any values into your code -- if you keep content in data structures (=think config or database ), you will minimize your chances for running into this problem because you re processing abstractions rather than specific values. This means changing your concept from "these are the definite people who can ever do this" into "let s ask another facility whether this guy can do this"

If you absolutely positively must have a function like what you described, you can do it with func_get_args():

function matches_any()
{
    $haystack = func_get_args();        
    $needle = array_shift( $haystack );

    return in_array( $needle, $haystack );
}

(未测试)

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