Create a word cloud on selected pixels - php

Question

I am trying to create a word cloud of a person's face. Similar to this
To achieve this I got a black & white image of a person and turned the darkest pixel to black and lightest pixel to white. And here is my result
Now I have got the area where I would like to place word clouds. Now I can't figure out how do I place words inside the face keeping margin/angle between words.
Here's the code what i have done so far
<?php
set_time_limit(0);
$src = 'person.jpeg';
$im = imagecreatefromjpeg($src);
$size = getimagesize($src);
$width = $size[0];
$height = $size[1];
$image_p = imagecreatetruecolor($width, $height);
imagecopyresampled($image_p, $im, 0, 0, 0, 0, $width, $height, $width, $height);
$white_color = imagecolorallocate($im, 255, 255, 255);
$black_color = imagecolorallocate($im, 0, 0, 0);
$font = __DIR__ . "/testfont.ttf";
$font_size = 16;
$text = "Test text";
$skip = true;
for ($x = 0; $x < $width; $x++) {
for ($y = 0; $y < $height; $y++) {
$rgb = imagecolorat($im, $x, $y);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
if ($r >= 126) {
imagesetpixel($image_p, $x, $y, $white_color);
} else {
imagesetpixel($image_p, $x, $y, $black_color);
if ($x % 20 == 1) {
imagestring($image_p, 5, $x, $y, 'T', $black_color);
//imagettftext($image_p, 16, 0, $x, $y, $black_color, $font, $text);
}
}
//var_dump($r, $g, $b);
//echo "<br/>";
}
}
imagestring($image_p, 5, 0, 0, 'Hello world!', $black_color);
header('Content-Type: image/jpeg');
imagejpeg($image_p, null, 100);
I tried using imagestring & imagettftext
if ($x % 20 == 1) {
imagestring($image_p, 5, $x, $y, 'T', $black_color);
//imagettftext($image_p, 16, 0, $x, $y, $black_color, $font, $text);
}
And got weird output. With imagettftext it takes too long to render and with imagestring this is what I got

Answer 1

Using one of these functions not both of them: imagesetpixel or imagestring
And if you have B/W photo, forget $black_color & $white_color or add them to this codes to customize more. And also add your custom header in the end.
list($w, $h, $type) = getimagesize('person.jpeg');
$resource = imagecreatefromstring(file_get_contents('person.jpeg'));
$img = imagecreatetruecolor($w, $h);
for($y=0; $y<$h; $y+=20)
for($x=0; $x<$w; $x+=20)
imagestring($img, 5, $x, $y, 'Hello world!', imagecolorat($resource, $x, $y));

Answer 2

Here's what works for me. I create a png image template in the Gimp, save it. Trickiest part for me was figuring out the font path aspect, since the font file just had to be in the one directory.
<?php
// Create Image From Existing File
$image = imagecreatefrompng('baseimg.png');
// Allocate A Color For The Text
$black = imagecolorallocate($image, 125, 125, 255);
// Set Path to Font File
$font_path = './FreeSans.ttf';
$text = "Hello World!";
// Print Text On Image
imagettftext($image, 14, 0, 15, 110, $black, $font_path, $text);
//Set the Content Type
header('Content-type: image/png');
// Send Image to Browser
imagepng($image);
// Clear Memory
imagedestroy($image);
exit;
?>