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PHPで生成された画像の動的テキストを中央に揃える

画像上に生成されたテキストを画像の中央に揃えたい。今のところ、それを揃えることが可能かどうかわかりません。以下はコードです。

$im = @imagecreatefromjpeg('poloroid.jpg');

// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
//imagefilledrectangle($im, 0, 0, 399, 29, $white);

// The text to draw
//$text = 'John...';
$fbid = $_POST["id"]; 
$text = $_POST["want"];
$fb_email =$_POST["email"];
$fb_name=$_POST["name"];

$uploads_dir = 'uploaded_files/';
// Replace path by your own font path
$font = 'verdana.ttf';

//image file name
//$name ="$fbid.png";
$name = $uploads_dir.$fbid.".png"; //this saves the image inside uploaded_files folder

// Add some shadow to the text
imagettftext($im, 20, 0,  25, 126, $grey, $font, $text);

// Add the text
imagettftext($im, 20, 0, 25, 125, $black, $font, $text);

// Using imagepng() results in clearer text compared with imagejpeg()
//imagepng($im);
imagepng($im,$name,9);
imagedestroy($im);

助けてくれてありがとう。

phpimagettftext
17
Shazery Nasir
$im = @imagecreatefromjpeg('poloroid.jpg');

// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
//imagefilledrectangle($im, 0, 0, 399, 29, $white);

// The text to draw
//$text = 'John...';
$fbid = $_POST["id"]; 
$text = $_POST["want"];
$fb_email =$_POST["email"];
$fb_name=$_POST["name"];

$uploads_dir = 'uploaded_files/';
// Replace path by your own font path
$font = 'verdana.ttf';
$font_size = 20;
$angle = 45;

//image file name
//$name ="$fbid.png";
$name = $uploads_dir.$fbid.".png"; //this saves the image inside uploaded_files folder

// Get image Width and Height
$image_width = imagesx($im);  
$image_height = imagesy($im);

// Get Bounding Box Size
$text_box = imagettfbbox($font_size,$angle,$font,$text);

// Get your Text Width and Height
$text_width = $text_box[2]-$text_box[0];
$text_height = $text_box[7]-$text_box[1];

// Calculate coordinates of the text
$x = ($image_width/2) - ($text_width/2);
$y = ($image_height/2) - ($text_height/2);

// Add some shadow to the text
imagettftext($im, $font_size, 0, $x, $y+1, $grey, $font, $text);

// Add the text
imagettftext($im, $font_size, 0, $x, $y, $black, $font, $text);

// Using imagepng() results in clearer text compared with imagejpeg()
//imagepng($im);
imagepng($im,$name,9);
imagedestroy($im);
31
Fr0z3n

stil/Gd-text クラスを使用できます。免責事項：私は著者です。

<?php
use GDText\Box;
use GDText\Color;

$im = @imagecreatefromjpeg('poloroid.jpg');

$textbox = new Box($im);
$textbox->setFontSize(20);
$textbox->setFontFace('verdana.ttf');
$textbox->setFontColor(new Color(0, 0, 0)); // black
$textbox->setTextShadow(
    new Color(0, 0, 0, 80), // black color, but 60% transparent
    0,
    -1 // shadow shifted 1px to top
);
$textbox->setBox(
    0,  // distance from left Edge
    0,  // distance from top Edge
    imagesx($im), // textbox width, equal to image width
    imagesy($im)  // textbox height, equal to image height
);

// now we have to align the text horizontally and vertically inside the textbox
// the texbox covers whole image, so text will be centered relatively to it
$textbox->setTextAlign('center', 'center');
// it accepts multiline text
$textbox->draw($text);

$uploads_dir = 'uploaded_files/';
//image file name
//$name ="$fbid.png";
$name = $uploads_dir.$fbid.".png"; //this saves the image inside uploaded_files folder
imagepng($im, $name, 9);
imagedestroy($im);

デモンストレーション：

demo

23
stil

私はあなたのコードを少し更新しました：

function ImageTTFCenter($image, $text, $font, $size, $angle = 45) 
{
    $xi = imagesx($image);
    $yi = imagesy($image);

    $box = imagettfbbox($size, $angle, $font, $text);

    $xr = abs(max($box[2], $box[4]));
    $yr = abs(max($box[5], $box[7]));

    $x = intval(($xi - $xr) / 2);
    $y = intval(($yi + $yr) / 2);

    return array($x, $y);
}

$im = @imagecreatefromjpeg('poloroid.jpg');

// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
//imagefilledrectangle($im, 0, 0, 399, 29, $white);

// The text to draw
//$text = 'John...';
$fbid = $_POST["id"]; 
$text = $_POST["want"];
$fb_email =$_POST["email"];
$fb_name=$_POST["name"];

$uploads_dir = 'uploaded_files/';
// Replace path by your own font path
$font = 'verdana.ttf';

//image file name
//$name ="$fbid.png";
$name = $uploads_dir.$fbid.".png"; //this saves the image inside uploaded_files folder

list($x, $y) = ImageTTFCenter($im, $text, $font, 20)
// Add some shadow to the4 text
imagettftext($im, 20, 0, $x, $y+1, $grey, $font, $text);

// Add the text
imagettftext($im, 20, 0, $x, $y, $black, $font, $text);

// Using imagepng() results in clearer text compared with imagejpeg()
//imagepng($im);
imagepng($im,$name,9);
imagedestroy($im);

ImageTTFCenter関数は、画像の中心座標を検出しますimagettftext

1
user1909426