PHP: Create IMAGE from TEXT

public static function anaCreateImgFromText( $string, $image_random_name = 'tmp_name' ){
		// set charset
    	mb_internal_encoding("UTF-8");

		$content = "";
		$font = get_stylesheet_directory() . "/assets/fonts/Lato/regular.ttf";
		// text width
		$width = 540;
		//font size
		$size = 16;
		$line_num = 0;

		// explode string to words and movo it to letter[]
		for ($i = 0; $i < mb_strlen($string); $i++) {
			$letter[] = mb_substr($string, $i, 1);
		}
		foreach ($letter as $l) {
			$tmpstr = $content . " " . $l;
			$fontBox = imagettfbbox($size, 0, $font, $tmpstr);

			if ((($fontBox[2] > $width) && ($content !== "")) || $l == '•') {
				$content .= "\n";
				$line_num += 1;
			}
			$content .= $l;
		}

		$fontHeight = imagefontheight($size) * 2; //2 - line-height

		$im = imagecreatetruecolor(550, $line_num * $fontHeight + 30);//30 = padding-top 15px + padding-bottom 15px

		// set background color
		$lightBlue = imagecolorallocate($im, 248, 250, 255);
		imagefill($im, 0, 0, $lightBlue);

		// set font color
		$black = imagecolorallocate($im, 0, 0, 0);

		// ceil(($width - $fontBox[2]) / 2) - centered text
		// y=15 - padding from top
		imagettftext($im, $size, 0, ceil(($width - $fontBox[2]) / 2), 15, $black, $font, $content);
		// get image url
		$filePathDir = get_stylesheet_directory() . static::$tmp_folder;
		if (!is_dir($filePathDir)) {
			mkdir($filePathDir, 0777, true);
		}
		// add filename (must be random)
		$filePath = $filePathDir . 'text.jpg'; // add $image_random_name
		// generate image and save to server
		imagejpeg($im, $filePath);
		return $filePath;
	}


	function anaCreateTwitImage( $analyst_image_src, $analyst_text_data = [] ){
		// result image height
		$height = 0;

		// result image width
		$width = 570;
		$source = [];
		$image_p = [];

		// Analyst photo url
		// like /home/user1/anachart.com/wp-content/themes/theme1/images/analyst.jpg
		$image = [
			get_stylesheet_directory() . static::$tmp_folder . 'head.jpg', //$analyst_image_src
		];

		//analyst text data array
		// $analyst_text_data
		$text_data = [
			'Analyst: SEAN WIELAND (PIPER SANDLER)',
			'The Stock: CHNG (Change Healthcare Inc)',
			'Price Target Change: $494->$549 = $55 (11.13%)',
			'Average Time For PT To Be Met: 251',
			'Potential Upside Change: $109.6->$164.6; 198%->133%',
			'Change Price Target Met Ratio: 18/22 (81.82%)'
		];

		// text data to string
		$text_data = '• ' . implode('• ', $text_data);

		// generate img from text
		$image_path = anaCreateImgFromText($text_data);

		// 1 - this is generated image from text
		$image[1] = $image_path;

		// get images data
		foreach ($image as $key => $val) {
			$source[$key]['source'] = Imagecreatefromjpeg($val);
			$res_image[$key] = getimagesize($val);
		}

		// get the total height of the canvas
		foreach ($res_image as $key => $val) {
			$height += $val[1];
			$res_image[$key]['height'] = $val[1];

			// scale
			$image_p[$key] = imagecreatetruecolor($width, $val[1]);
			imagecopyresampled($image_p[$key], $source[$key]['source'], 0, 0, 0, 0,  $val[0], $val[1], $val[0], $val[1]);
		}

		// create canvas
		$new_image = imagecreatetruecolor($width, $height);

		// add background color
		$lightBlue = imagecolorallocate($new_image, 248, 250, 255);
		imagefill($new_image, 0, 0, $lightBlue);

		// add image to canvas
		$dst_x = 15; //padding - 15px
		$dst_y = 15;
		foreach ($res_image as $key => $val) {
			imagecopy($new_image, $image_p[$key], $dst_x, $dst_y, 0, 0, $val[0], $val[1]);
			$dst_y += $val[1];
		}

		$logo = get_stylesheet_directory() . static::$tmp_folder . 'logo.jpg';
		$logo_src = Imagecreatefromjpeg($logo);
		$tmp_size = getimagesize($logo);
		imagecopy($new_image, $logo_src, ceil($width - $tmp_size[0] - 15), 15, 0, 0, $tmp_size[0], $tmp_size[1]);

		// create image
		$res_data = Imagejpeg($new_image, get_stylesheet_directory() . static::$tmp_folder . 'twitter_analyst_img.jpg', 1000); // add $image_random_name

		if( !$res_data ) return false;

		// remove tmp images
		unlink(get_stylesheet_directory() . static::$tmp_folder . 'text.jpg'); //$image_random_name

		return true;
	}