PHP GD Functions

$image is an image returned by one of the image creation functions, such as imagecreatetruecolor.

If $angle = 0 the $text will be set left-to-right reading text.

Higher values of $angle represent a counterclockwise rotation; for example a value $angle = 90 would result in bottom-to-top reading text.

The coordinates $x and $y will define the basepoint of the first character, that is, roughly the lower-left corner of the character.

It is worth noting that, this introduces a difference from the imagestring function, where, where $x = 0 and $y = 0 define the upper-left or top-left, corner of the first character.

The $y sets the position of the fonts baseline, not the very bottom of the character.

If $color < 0, the antialias effect will be turning off.

Check your version of GD, as versions prior to 2.0.18 may produce an error when making a $font_filename call.

The version of GD in use can be viewed by running the gd_info function.

The $options has been added in PHP 8.0.0.


<?php

array|false imagettftext ( GdImage $image, 
                                              float $size, 
                                              float $angle, 
                                                 int $x, 
                                                 int $y, 
                                                 int $color, 
                                            string $font_filename, 
                                            string $text, 
                                             array $options = [] )

where,

$image = An image identifier

$size = The font size in points

$angle = The angle in degrees to be written in the image

$x = The x-coordinate where the first character will be written

$y = The y-coordinate where the first character will be written

$color = The color index to be used

$font_filename = The path to the TrueType font you wish to use

$text = The text STRING - UTF-8 encoded

$options = Options for written


?>

$image

An image identifier.

$size

The font size in points.

$angle

The angle in degrees to be written in the image.

$x

The x-coordinate of the image where the first character will be written.

$y

The y-coordinate of the image where the first character will be written.

$color

The color index to be used.

$font_filename

The path to the TrueType font you wish to use.

$text

The text string encoded in UTF-8.

$optins

The options for written.

Since PHP 8.0.0.

EXERCISE


<?php

echo 'PHP VERSION: ' . PHP_VERSION . '<br><br>';

if(PHP_MAJOR_VERSION < 8)
{
$var = getcwd();

$font_name = "$var/ttf/VeraIt.ttf";
// complete path
}
else
{
$font_name = "ttf/VeraIt.ttf";
}

$font_size = 18;
$angle_txt = 0;
$pos_x = 110;
$pos_y = 28;
$txt = '+ Alea jacta est!';

$file01 = 'png/PNG 089 01.png';

$id_01 = imagecreate(400, 40);
$bkg_color = imagecolorallocate($id_01, 255, 0, 0);
$bdr_color = imagecolorallocate($id_01, 0, 0, 0);
$txt_color = imagecolorallocate($id_01, 255, 255, 255);

$ttf_arr = 
imagettftext($id_01, $font_size, $angle_txt, 
$pos_x, $pos_y, $txt_color, $font_name, $txt );

imagerectangle ($id_01, 1, 1, 399, 39, $bdr_color);

imagepng($id_01, $file01);

echo $file01; ?><br><br>
<img src="<?php echo $file01; ?>"
alt="<?php echo $file01; ?>" 
title="<?php echo $file01; ?>"><br><br>

<table width="100%" cellspacing="5" 
cellpadding="5" border="1"><tbody>
<tr><td colspan="2">EMBEDED TEXT RECTANGLE</td></tr>
<tr> <td>COORDINATES</td><td>MEANING</td></tr>    

<?php

foreach ($ttf_arr as $ar => $arr)
{
$arr_ndx = [ 
'x-coordinate LOWER LEFT', 
'y-coordinate LOWER LEFT',
'x-coordinate LOWER RIGHT', 
'y-coordinate LOWER RIGHT',              
'x-coordinate TOP LEFT', 
'y-coordinate TOP LEFT',
'x-coordinate TOP RIGHT', 
'y-coordinate TOP RIGHT' 
];

echo '<tr><td>' . $arr . '</td><td>' . $arr_ndx[$ar] . '</td></tr>';
}

?>
<tr><td colspan="2">ed48</td></tr></tbody></table>

RESULT

PNG 089 01.png

PNG 089 01.png apr

ABOUT THE EMBEDED TEXT RECTANGLE
COORDINATES	MEANING
112	x-coordinate LOWER LEFT
33	y-coordinate LOWER LEFT
311	x-coordinate LOWER RIGHT
33	y-coordinate LOWER RIGHT
311	x-coordinate TOP LEFT
10	y-coordinate TOP LEFT
112	x-coordinate TOP RIGHT
10	y-coordinate TOP RIGHT
ed48

EXERCISE


<?php

// $lang = 'pt';
$lang = 'en';

if(PHP_MAJOR_VERSION < 8)
{
$var = getcwd();

$font_name = "$var/ttf/VeraIt.ttf";
// complete path
}
else
{
$font_name = "ttf/VeraIt.ttf";
}

$font_size = 16;
$angle_en = 55;
$pos_x = 210;
$pos_y = 220;
$pt = ' Tecelã Moderna ';
$en = ' Modern Weaver ';

$a_base_img = 'png/PNG 090 02.png';

$a_dest_img = 'png/PNG 090 02 imagettftext.png';

echo $a_base_img; ?><br><br>
<img src="<?php echo $a_base_img; ?>"
alt="<?php echo $a_base_img; ?>" 
title="<?php echo $a_base_img; ?>"><br><br><br> 
<?php

$id_aimgfile = imagecreatefrompng($a_base_img);

$en_color = imagecolorallocate($id_aimgfile, 255, 255, 0);
$pol_color = 
imagecolorallocatealpha($id_aimgfile, 0, 0, 0, 50);
$pol_line  = imagecolorallocate($id_aimgfile, 0, 0, 0);

$ttf_arr = 
imagettftext($id_aimgfile, $font_size, $angle_en, 
$pos_x, $pos_y, $en_color, $font_name, $$lang );

imagepolygon($id_aimgfile, $ttf_arr, 4, $pol_line);

imagepng($id_aimgfile, $a_dest_img);

imagedestroy($id_aimgfile);

echo $a_dest_img; ?><br><br>
<img src="<?php echo $a_dest_img; ?>"
alt="<?php echo $a_dest_img; ?>" 
title="<?php echo $a_dest_img; ?>"><br><br>