_output.tools.php

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<?php

    // costanti HTML
        define( 'HTML_EOL'                      , '<br>' . PHP_EOL );
        define( 'HTML_2EOL'                     , '<br>' . HTML_EOL );

    // costanti XHTML
        define( 'XHTML_EOL'                     , '<\br>' . PHP_EOL );
        define( 'XHTML_2EOL'                    , '<\br>' . XHTML_EOL );

    // costanti per il contenuto
        define( 'MIME_TEXT_PLAIN'               , 'text/plain' );
        define( 'MIME_TEXT_HTML'                , 'text/html' );
        define( 'MIME_APPLICATION_JSON'         , 'application/json' );
        define( 'MIME_APPLICATION_XML'          , 'application/xml' );
        define( 'MIME_MULTIPART_FORM_DATA'      , 'multipart/form-data' );

    // costanti per l'encoding
        define( 'ENCODING_UTF8'                 , 'utf-8' );

    function buildJson( $content , $encoding = ENCODING_UTF8 , $headers = array() ) {

        // generazione del contenuto
            $json = json_encode( string2utf8( $content ) );

        // log
            if( ! empty( json_last_error() ) ) { logWrite( 'errore #'.json_last_error().' '.json_last_error_msg(), 'json', LOG_ERR ); }

        // genero l'output
            build( $json , MIME_APPLICATION_JSON , $encoding , $headers );

    }



    function buildXml( $content , $encoding = ENCODING_UTF8 , $headers = array() ) {

        // genero l'output
            build( $content , MIME_APPLICATION_XML , $encoding , $headers );

    }

    function buildText( $content , $encoding = ENCODING_UTF8 , $headers = array() ) {

        // genero l'output
            build( $content , MIME_TEXT_PLAIN , $encoding , $headers );

    }

    function dieText( $content ) {

        header( 'Content-type: text/plain;' );
        die( $content );

    }

    function buildHTML( $content , $encoding = ENCODING_UTF8 , $headers = array() ) {

        // preparazione del documento
            $dom = new DOMImplementation;
            $doctype = $dom->createDocumentType("html", "-//W3C//DTD HTML 4.01//EN", "http://www.w3.org/TR/html4/strict.dtd"); 
            $document = $dom->createDocument( NULL, 'html', $doctype ); 

            $document->preserveWhiteSpace = false;
            $document->formatOutput = true;

            $html = $document->documentElement;
            $head = $document->createElement('head');
            $title = $document->createElement('title');
            $text = $document->createTextNode('documento generato '.date('r'));
            $body = $document->createElement('body');

            $contentFragment = $document->createDocumentFragment();
            $contentFragment->appendXML( $content );

            $title->appendChild( $text );
            $head->appendChild( $title );
            $html->appendChild( $head );
            $html->appendChild( $body );
            $body->appendChild( $contentFragment );

        // genero l'output
            build( urldecode( $document->saveHTML() ) , MIME_TEXT_HTML , $encoding , $headers );

    }

    function build( $content , $type = MIME_TEXT_PLAIN , $encoding = ENCODING_UTF8 , $headers = array() ) {

        // invio gli headers
            buildHeaders( $headers );

        // invio l'header per il contenuto
            buildContentHeader( $type, $encoding );

        // invio l'output
            echo $content;

    }

    function buildHeaders( $headers ) {

        // invio gli headers
            foreach( $headers as $header ) {
                header( $header );
            }

    }

    function buildContentHeader( $t = MIME_TEXT_PLAIN, $e = ENCODING_UTF8 ) {

        // invio gli headers
            buildHeaders( array( 'Content-Type: ' . $t . '; charset=' . $e ) );

    }

?>