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    <p>There's a way to calculate widths exactly, rather than using <a href="https://stackoverflow.com/questions/1283555/zendpdf-calculating-length-of-text-string-in-current-font-for-line-wrapping/1283586#1283586">Gorilla3D's worst case algorithm</a>.</p> <p>Try this code from <a href="http://devzone.zend.com/article/2525-Zend_Pdf-tutorial#comments-2535" rel="nofollow noreferrer">http://devzone.zend.com/article/2525-Zend_Pdf-tutorial#comments-2535</a></p> <p>I've used it in my application to calculate offsets for right-aligned text and it works</p> <pre><code>/** * Returns the total width in points of the string using the specified font and * size. * * This is not the most efficient way to perform this calculation. I'm * concentrating optimization efforts on the upcoming layout manager class. * Similar calculations exist inside the layout manager class, but widths are * generally calculated only after determining line fragments. * * @link http://devzone.zend.com/article/2525-Zend_Pdf-tutorial#comments-2535 * @param string $string * @param Zend_Pdf_Resource_Font $font * @param float $fontSize Font size in points * @return float */ function widthForStringUsingFontSize($string, $font, $fontSize) { $drawingString = iconv('UTF-8', 'UTF-16BE//IGNORE', $string); $characters = array(); for ($i = 0; $i &lt; strlen($drawingString); $i++) { $characters[] = (ord($drawingString[$i++]) &lt;&lt; 8 ) | ord($drawingString[$i]); } $glyphs = $font-&gt;glyphNumbersForCharacters($characters); $widths = $font-&gt;widthsForGlyphs($glyphs); $stringWidth = (array_sum($widths) / $font-&gt;getUnitsPerEm()) * $fontSize; return $stringWidth; } </code></pre> <p>With regard to performance, I haven't used this intensively in a script but I can imagine it's slow. I'd suggest writing the PDFs to disk, if possible, so repeat views are very fast, and caching/hard coding data where possible.</p>
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    1. USDavid Snabel-Caunt
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    1. COI've used this too. Works as advertised.
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    2. COthat looks good. I've got a fixed vocabulary of about 200 phrases, so could use the above code (slightly adapted) to precompute and cache the word wrapped strings. The pdf is generated only once (at first viewing) and then cached as well. This should result in almost no performance penalty and some much nicer formatting. Thanks for your help!
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