PHPKonf: Istanbul PHP Conference 2017


(PHP 4, PECL pdflib >= 1.0.0)

PDF_show_xyOutput text at given position


bool PDF_show_xy ( resource $p , string $text , float $x , float $y )

Prints text in the current font. Restituisce TRUE in caso di successo, FALSE in caso di fallimento.

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User Contributed Notes 4 notes

Christopher Jastram <cej at intech dot com>
11 years ago
Here's a little function that creates a pdf_show_xy_right() function with exactly the same parameters as pdf_show_xy(), except that the third parameter now specifies the right-aligned edge position.

function pdf_show_xy_right(&$pdf, $text, $right, $bottom) {
    $fontname = pdf_get_parameter($pdf, "fontname", 0);
    $font = pdf_findfont($pdf, $fontname, "host", 0);
    $size = pdf_get_value($pdf, "fontsize", 0);
    $width = pdf_stringwidth($pdf, $text, $font, $size);
    pdf_show_xy($pdf, $text, $right-$width, $bottom);

Set your font name and size separately, just as you would with pdf_show_xy(), and then call this function like so:

pdf_show_xy_right($pdf, "Hello World", 50, 200);

The third parameter is the right edge, fourth parameter is the baseline.  You do NOT have to pass in the font and size!
DrPsycho at easynet dot be
14 years ago
No, that's just because in PDF the origin is at the lower left corner
nid at home dot se
14 years ago
When using PDFLib version 4.0.3 under PHP 4.2.1 on Windows the Y-position is reversed, which means, the Y is the number of pixels that should be visible BELOW the texts baseline.
sigve at NwOoSlPfArMaidah dot no
12 years ago
Want to do right-to-left text with pdflib? Just pick the right margin, and send it as $x to this function.

function pdf_show_xy_backwards ($pdf, $text, $font, $size, $x, $y) {
$currx = $x;
    for (
$i = strlen($text); $i > 0; $i--) {
$char = substr((string)$text, $i-1, 1);
$width = pdf_stringwidth($pdf, (string)$char, $font, $size);
$currx = $currx - $width;
pdf_show_xy($pdf, (string)$char, $currx, $y);
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