fit_textflow fitmethod auto ?

fitmethod-auto.php

<?php
$p = new PDFlib();
$p->set_option("stringformat=utf8");
$p->begin_document("", "");

/* Create an A4 Landscape page */
$p->begin_page_ext(0, 0, "width=a4.height height=a4.width");

$createTextFlowOptList = [
    'hyphenchar=none',
    'fontname=Helvetica',
    'encoding=unicode',
    'fontsize=32',
    'leftindent=0',
    'adjustmethod=nofit',
    'charclass={letter .}',
];

$fitTextFlowOpts = 'fitmethod=auto showborder';

$boxDims = ['width' => 200, 'height' => 50];

$boxPos = ['llx' => 10, 'lly' => 400];
$textFlow = $p->create_textflow('[email protected]', implode(' ', $createTextFlowOptList));
$res = $p->fit_textflow(
    $textFlow,
    $boxPos['llx'], $boxPos['lly'],
    $boxPos['llx'] + $boxDims['width'],
    $boxPos['lly'] + $boxDims['height'],
    $fitTextFlowOpts
);

$p->end_page_ext("");

$p->end_document("");

$buf = $p->get_buffer();
$len = strlen($buf);

header("Content-type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=fitmethod-auto.pdf");
print $buf;