PDF 函数
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PDF_info_textline

(PECL pdflib >= 2.1.0)

PDF_info_textline — Perform textline formatting and query metrics

说明

float PDF_info_textline ( resource $pdfdoc , string $text , string $keyword , string $optlist )

Performs textline formatting and queries the resulting metrics.

PDF 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: Perform textline formatting and query metrics

用户评论:

nico (17-Jul-2009 12:18)

You can use PDF_info_textline to center some text in the page.

Here's a little function

<?php
// Parameters:
// $p -> the PDF handle
// $text -> the text to center
// $posy -> the vertical position of the text
// $pageWidth -> the width of the page, defaults to 595 (A4)
function center_text($p, $text, $posy, $pageWidth=595)
    {
    $width = PDF_info_textline($p, $text, 'width', '');
    PDF_fit_textline($p, $text, ($pageWidth-$width)/2, $posy, '');
}
?>