imagexbm

(PHP 5, PHP 7, PHP 8)

imagexbm — Output an XBM image to browser or file

Descrição

imagexbm(GdImage $image, ?string $filename, ?int $foreground_color = null): bool

Outputs or save an XBM version of the given image.

Nota: imagexbm() doesn't apply any padding, so the image width has to be a multiple of 8. This restriction does no longer apply as of PHP 7.0.9.

Parâmetros

image

Um objeto GdImage, retornado por uma das funções de criação de imagem, como imagecreatetruecolor().

filename

The path to save the file to, given as string. If null, the raw image stream will be output directly.

The filename (without the .xbm extension) is also used for the C identifiers of the XBM, whereby non alphanumeric characters of the current locale are substituted by underscores. If filename is set to null, image is used to build the C identifiers.

foreground_color

You can set the foreground color with this parameter by setting an identifier obtained from imagecolorallocate(). The default foreground color is black. All other colors are treated as background.

Valor Retornado

Retorna true em caso de sucesso ou false em caso de falha.

Cuidado

Entretanto, se a biblioteca libgd falhar ao gerar a imagem, esta função retornará true.

Registro de Alterações

Versão	Descrição
8.0.0	O parâmetro `image` agora espera uma instância de GdImage; anteriormente, um resource `gd` válido era esperado.
8.0.0	`foreground_color` is now nullable.
8.0.0	The fourth parameter, which was unused, has been removed.

Exemplos

Exemplo #1 Saving an XBM file

<?php
// Create a blank image and add some text
$im = imagecreatetruecolor(120, 20);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5,  'A Simple Text String', $text_color);

// Save the image
imagexbm($im, 'simpletext.xbm');

// Free up memory
imagedestroy($im);
?>

Exemplo #2 Saving an XBM file with a different foreground color

<?php
// Create a blank image and add some text
$im = imagecreatetruecolor(120, 20);
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5,  'A Simple Text String', $text_color);

// Set a replacement foreground color
$foreground_color = imagecolorallocate($im, 255, 0, 0);

// Save the image
imagexbm($im, NULL, $foreground_color);

// Free up memory
imagedestroy($im);
?>

Notas

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User Contributed Notes 1 note

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Anonymous ¶

12 years ago


FlagCreation with some random text inside.

<?php
class Logo{
    private $colors;
        private $imgWidth;  
    private $imgHeight;   
    private $img;
    private $text;

    public function __construct($width = 100, $height = 60){
        $this->imgWidth = $width;
        $this->imgHeight = $height;
        $this->text = "RND TEXT";
        $this->createImage();
    }
    
    public function getText(){
        return $this->text;
    }
    
    public function createImage(){
        $this->img = imagecreatetruecolor($this->imgWidth,$this->imgHeight);
            $farbe = array(200,200,200); 
            $this->colors[0] = $this->makeColor($farbe);
            $farbe = array(100,100,200); 
            $this->colors[1] = $this->makeColor($farbe);
        
        imagefill($this->img,0,0,$this->colors[0]);
                
        $streifenhoehe = intval($this->imgHeight / 6);        
        $textgroesse = intval($streifenhoehe *2);
        $y = 0;
        $x = 0;
        
        imagefilledrectangle($this->img,0,0,$this->imgWidth,$streifenhoehe,$this->colors[1]);
        $y = $this->imgHeight - $streifenhoehe;
        imagefilledrectangle($this->img,0,$y,$this->imgWidth,$this->imgHeight,$this->colors[1]);
        
        
        $textma = imagettfbbox ( $textgroesse ,0 , "ARIAL.TTF", $this->text);
        $textanfang = ($this->imgWidth - ($textma[2] - $textma[0]))/2;
        $textanfang_hoehe = intval(($this->imgHeight-($textma[7]-$textma[1]))/2);
        
         imagettftext($this->img, $textgroesse,0,$textanfang, $textanfang_hoehe, $this->colors[1],"ARIAL.TTF", $this->text);
        
        
    }
    
    public function makeColor($color){
        if (count($color)%3 != 0)
            return false;
        else
            return imagecolorallocate($this->img,$color[0],$color[1],$color[2]);
    }
    
    public function getImage(){
         header('Content-Type: image/gif', true); 
        imagejpeg($this->img);
    }    
}

$logo = new Logo(300,180);
$logo->getImage();
?>

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