imagestringup

(PHP 4, PHP 5, PHP 7, PHP 8)

imagestringup — Draw a string vertically

Descrizione

imagestringup(
    GdImage $image,
    GdFont|int $font,
    int $x,
    int $y,
    string $string,
    int $color
): bool

Draws a string vertically at the given coordinates.

Elenco dei parametri

image: Una risorsa immagine, restituita da una delle funzioni di creazione immagine, come imagecreatetruecolor().
font: Può essere 1, 2, 3, 4, 5 per i font interni con codifica latin2 (dove numeri più alti corrispondono a font più grandi) o qualsiasi identificatore di font registrato con imageloadfont().
x: x-coordinate of the bottom left corner.
y: y-coordinate of the bottom left corner.
string: The string to be written.
color: A color identifier created with imagecolorallocate().

Valori restituiti

Restituisce true in caso di successo, false in caso di fallimento.

Log delle modifiche

Versione	Descrizione
8.1.0	The `font` parameter now accepts both an GdFont instance and an int; previously only int was accepted.
8.0.0	`image` expects a GdImage instance now; previously, a valid `gd` resource was expected.

Esempi

Example #1 imagestringup() example

<?php
// create a 100*100 image
$im = imagecreatetruecolor(100, 100);

// Write the text
$textcolor = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
imagestringup($im, 3, 40, 80, 'gd library', $textcolor);

// Save the image
imagepng($im, './stringup.png');
imagedestroy($im);
?>

Il precedente esempio visualizzerà qualcosa simile a:

Vedere anche:

imagestring() - Draw a string horizontally
imageloadfont() - Load a new font

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User Contributed Notes 1 note

down

Anonymous ¶

21 years ago

function imagestringdown(&$image, $font, $x, $y, $s, $col)
{
    $width = imagesx($image);
   $height = imagesy($image);
    
    $text_image = imagecreate($width, $height);

   $white = imagecolorallocate ($text_image, 255, 255, 255);
   $black = imagecolorallocate ($text_image, 0, 0, 0);  

    $transparent_colour = $white;
   if ($col == $white)
      $transparent_color = $black;
  
   imagefill($text_image, $width, $height, $transparent_colour);
   imagecolortransparent($text_image, $transparent_colour);
  
   imagestringup($text_image, $font, ($width - $x), ($height - $y), $s, $col);
   imagerotate($text_image, 180.0, $transparent_colour);
  
   imagecopy($image, $text_image, 0, 0, 0, 0, $width, $height);
}

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