Description
array getimagesize (string filename [, array
imageinfo])
The GetImageSize() function will determine the
size of any GIF, JPG,
PNG or SWF image file and
return the dimensions along with the file type and a height/width
text string to be used inside a normal HTML
IMG tag.
Returns an array with 4 elements. Index 0 contains the width of
the image in pixels. Index 1 contains the height. Index 2 a
flag indicating the type of the image. 1 = GIF, 2 = JPG, 3 =
PNG, 4 = SWF. Index 3 is a text string with the correct
"height=xxx width=xxx" string that can be used directly in an IMG
tag.
Example 1. GetImageSize
<?php $size = GetImageSize ("img/flag.jpg"); ?>
<IMG SRC="img/flag.jpg" <?php echo $size[3]; ?>
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The optional imageinfo parameter allows
you to extract some extended information from the image
file. Currently this will return the diffrent
JPG APP markers in an associative Array. Some
Programs use these APP markers to embedd text information in
images. A very common one in to embed IPTC
http://www.xe.net/iptc/ information in the
APP13 marker. You can use the iptcparse()
function to parse the binary APP13 marker into something
readable.
Example 2. GetImageSize returning IPTC
<?php
$size = GetImageSize ("testimg.jpg",&$info);
if (isset ($info["APP13"])) {
$iptc = iptcparse ($info["APP13"]);
var_dump ($iptc);
}
?>
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Note:
This function does not require the GD image library.
