Fast_Cat_II

<?php

function fast_cat( $path = '', $ext = array() )
{
    global $nen;

    if( is_string( $ext ) )
    {
        $ext = array( 0 => $ext );
    }
    if( ( !is_array( $ext ) ) | ( $ext === array() ) )
    {
        $ext = array( 0 => '' );
    }

    $buffer = ( is_dir( $_SERVER[ 'DOCUMENT_ROOT' ] . '/' . $path ) ? array_diff( scandir( $_SERVER[ 'DOCUMENT_ROOT' ] . '/' . $path, SCANDIR_SORT_ASCENDING ), array( '..', '.' ) ) : array() );

    $cat = array();

    foreach( $buffer as $entry )
    {
        $hit = 0;
        foreach( $ext as $test )
        {

            if( strtolower( substr( $entry, -strlen( $test ), strlen( $test ) ) ) === strtolower( $test ) )
            {
                $hit++;
                break;
            }
        }
        if( $hit > 0 )
        {
            $cat[ count( $cat ) ] = $entry;
        }
    }

    natcasesort( $cat );
    $cat = array_values( $cat );

    return $cat;
}

function cat_rando( $cat )
{
    global $nen;

    if( count( $cat ) > 0 )
    {
        return $cat[ rand( 0, count( $cat ) - 1 ) ];
    }
    else
    {
        return '';
    }
}

function fast_cat_ii( $path = '', $ext = array(), $type = __FILE__ )
{
    if( !is_array( $ext ) )
    {
        $ext = array( $ext );
    }

    $cat = array();

    $iterator = new DirectoryIterator( dirname( $type ) );

    while( $iterator -> valid() )
    {
        $test = $iterator -> getFilename();

        foreach( $ext as $test_ext )
        {
            if( strtolower( substr( $test, -strlen( $ext ) ) ) === strtolower( $test_ext ) )
            {
                $cat[] = $test;
                break;
            }
        }
        $iterator -> next();
    }
    return $cat;
}

?>