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imagepsbbox

Name

imagepsbbox — Determines the coordinates of the area surrounding a text string.

Synopsis

array imagepsbbox(text, font[, space][, tightness][, angle]); string text: Text string to use int font: Font identifier int space (optional): Distance between words int tightness (optional): Spacing between letters double angle (optional): Angle of rotation

Returns

Array of bounding box coordinates

Description

While similar to imagepstext() , this function doesn't actually draw any text. Instead, the text string is drawn "virtually," and the bounding box coordinates are returned without the text being drawn on the image. This means that calculations can be done on the text dimensions before committing it to the image, in case scaling is needed. The table below shows which elements of the array correspond to portions of the text bounding box.

`0`	`lower-left x coordinate`
`1`	`lower-left y coordinate`
`2`	`upper-right x coordinate`
`3`	`upper-right y coordinate`

Version

Existing since version 3.0.9

Example

Example 432. Display bounding box coordinates

header("Content-type: image/png");
$text = "hello world";
$font = imagepsloadfont("/path/to/font.pfb");
$im = imagecreate(200, 200);
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0, 0, 0);
imagefill($im, 0, 0, $black);
$bound = imagepsbbox($text, $font, 25, 0, 0, 0);
imagestring($im, 2, 10, 10, "x1 " . $bound[0], $white);
imagestring($im, 2, 10, 20, "y1 " . $bound[1], $white);
imagestring($im, 2, 10, 30, "x2 " . $bound[2], $white);
imagestring($im, 2, 10, 40, "y2 " . $bound[3], $white);
imagepng($im);
imagedestroy($im);

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