如何从Array中删除特定键？PHP

Question

我试图从数组中删除键.

这是我从print_r($ cats)得到的东西;

Array
(
    [0] => <a href="/website/index.php/Category:All" title="Category:All">All</a> &gt; <a href="/website/index.php/Category:Computer_errors" title="Category:Computer errors">Computer errors</a> &gt; <a href="/website/index.php/Category:HTTP_status_codes" title="Category:HTTP status codes">HTTP status codes</a> &gt; <a href="/website/index.php/Category:Internet_terminology" title="Category:Internet terminology">Internet terminology</a> 
    [1] => 
<a href="/website/index.php/Category:Main" title="Category:Main">Main</a> 
)

我试图用它来从数组中删除"Main"类别

    function array_cleanup( $array, $todelete )
{
    foreach( $array as $key )
    {
        if ( in_array( $key[ 'Main' ], $todelete ) )
        unset( $array[ $key ] );

    }
    return $array;
}

$newarray = array_cleanup( $cats, array('Main') );

仅供参考我是PHP的新手...显然我看到我犯了错误,但我已经尝试了很多东西而且他们似乎没有工作

Answer 1

Main不是数组的元素,它是数组元素的一部分

function array_cleanup( $array, $todelete )
{
    $cloneArray = $array;
    foreach( $cloneArray as $key => $value )
    {
        if (strpos($value, $todelete ) !== false)   
           unset( $array[ $key ] );     //$array[$key] = str_replace($toDelete, $replaceWith, $value) ;  // add one more argument $replaceWith to function 

    }
    return $array;
}

编辑:

与数组

function array_cleanup( $array, $todelete )
    {
      foreach($todelete as $del){
        $cloneArray = $array;
        foreach( $cloneArray as $key => $value )
        {          
            if (strpos($value, $del ) !== false)   
               unset( $array[ $key ] );     //$array[$key] = str_replace($toDelete, $replaceWith, $value) ;  // add one more argument $replaceWith to function 

           }
    }
     return $array;
}

  $newarray = array_cleanup( $cats, array('Category:Main') );