PHP gives a textbox using FreeType 2 font

php editor Baicao brings you an article about using FreeType 2 font text boxes in PHP. FreeType 2 is an open source software library for rendering fonts. Combined with PHP, it can achieve a more personalized and beautiful text display effect. Through this article, you will learn how to use FreeType 2 fonts in PHP to create text boxes, adding more design elements and creativity to your website or application.

Use FreeType 2 font to draw text box

FreeType 2 is an open source font rendering library that can be used to draw text boxes in php. The following steps describe how to draw a text box in PHP using FreeType 2:

1. Install FreeType 2 library

Install the FreeType 2 library using the following command:

pecl install freetype

2. Create image

Create an image using the imagecreate function:

$image = imagecreate(400, 200);

3. Assign colors

Assign colors to text and background using the imagecolorallocate function:

$black = imagecolorallocate($image, 0, 0, 0);
$white = imagecolorallocate($image, 255, 255, 255);

4. Initialize FreeType

Use FT_Init_FreeType function to initialize the FreeType library:

FT_Init_FreeType($ft);

5. Load font

Use FT_New_Face function to load fonts:

FT_New_Face($ft, "font.ttf", 0, $face);

6. Set font size

Use the FT_Set_Pixel_Sizes function to set the font size:

FT_Set_Pixel_Sizes($face, 12, 0);

7. Render text

Use FT_Render_Glyph function to render text:

FT_Load_Char($face, "A", FT_LOAD_RENDER);

8. Get text size

Use the FT_Glyph_Metrics function to get the text size:

$glyph = $face->glyph;
$width = $glyph->bitmap->width;
$height = $glyph->bitmap->rows;

9. Fill text

Fill text using the imagefilledrectangle function:

imagefilledrectangle($image, 0, 0, $width, $height, $white);

10. Draw text

Use imagecopy function to draw text:

imagecopy($image, $face->glyph->bitmap, 0, 0, 0, 0, $width, $height);

11. Release resources

Use FT_Done_Face and FT_Done_FreeType functions to release resources:

FT_Done_Face($face);
FT_Done_FreeType($ft);

Full code example:

This tutorial provides a step-by-step guide to drawing text boxes in PHP using FreeType 2 fonts. By following these steps, developers can create text boxes with custom fonts and colors.

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