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Render include file to variable

<?php
$GLOBALS['BufferedErrors']=Array();
function errorParse($errno, $errstr, $errfile, $errline, $errcontext) {
    $errorTypes = Array(
        E_ERROR => 'Fatal Error',
        E_WARNING => 'Warning',
        E_PARSE => 'Parse Error',
        E_NOTICE => 'Notice',
        E_CORE_ERROR => 'Fatal Core Error',
        E_CORE_WARNING => 'Core Warning',
        E_COMPILE_ERROR => 'Compilation Error',
        E_COMPILE_WARNING => 'Compilation Warning',
        E_USER_ERROR => 'Triggered Error',
        E_USER_WARNING => 'Triggered Warning',
        E_USER_NOTICE => 'Triggered Notice',
        E_STRICT => 'Deprecation Notice',
        E_RECOVERABLE_ERROR => 'Catchable Fatal Error'
    );
    $ret=(object)Array(
        'number'=>$errno,
        'message'=>$errstr,
        'file'=>$errfile,
        'line'=>$errline,
        'context'=>$errcontext,
        'type'=>$errorTypes[$errno]
    );
    $GLOBALS['BufferedErrors'][]=$ret;
    return false;
}
function parse($fileToInclude, $argumentsToFile=false) {
    $bufferedErrorStack = $GLOBALS['BufferedErrors'];
    set_error_handler('errorParse', error_reporting());
    $GLOBALS['BufferedErrors']=Array();
 
    if (!file_exists($fileToInclude))
        return '';
    if ($argumentsToFile === false)
        $argumentsToFile = Array();
    $argumentsToFile = array_merge($GLOBALS, $argumentsToFile);
    foreach ($argumentsToFile as $variableName => $variableValue)
        $$variableName = $variableValue;
    ob_start();
    include($fileToInclude);
    $ret = ob_get_contents();
    ob_end_clean();
 
    restore_error_handler();
    $errors = $GLOBALS['BufferedErrors'];
    $GLOBALS['BufferedErrors'] = $bufferedErrorStack;
    if (count($errors)>0) {
        $ret.='<ul class="error">';
        foreach ($errors as $error)
            $ret.=
                '<li>'.
                    '<b>'.$error->type.'</b>: '.
                    $error->message.
                    '<blockquote>'.
                        '<i>file</i>: '.$error->file.'<br />'.
                        '<i>line</i>: '.$error->line.
                    '</blockquote>'.
                '</li>';
        $ret.='</ul>';
    }
    return $ret;
}

Download this snippet

This script includes a PHP file - but render its output to a variable, rather than to the buffer. It's also set up to load the script with a variable set, and automagically loads globals into the script's namespace, making it an effective templating scheme. It also has error handling, so that you're not flying blind when using output buffering.