如何在使用php创建文本图像时添加背景图像？

我目前正在使用以下脚本--

---

但我也想添加一个背景图像。请帮助，我对这个功能特别陌生。

您需要做以下工作吗？您希望打开要用作背景的图像，然后在顶部写入文本

    <?php
    // Set the content-type
    header('Content-type: image/png');

    /* Attempt to open */
        $im = @imagecreatefrompng('backgroundimage.png');

        /* See if it failed */
        if(!$im)
        {
            // Create some colors
        $white = imagecolorallocate($im, 255, 255, 255);
        $grey = imagecolorallocate($im, 128, 128, 128);
        $black = imagecolorallocate($im, 115, 150, 195);
        imagefilledrectangle($im, 0, 0, 399, 29, $white);

        // The text to draw
        $text = 'My Name';
        // Replace path by your own font path
        $font = 'AGENCYB.TTF';

        // Add some shadow to the text
        imagettftext($im, 20, 0, 11, 21, $grey, $font, $text);

        // Add the text
        imagettftext($im, 20, 0, 10, 20, $black, $font, $text);

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


        }else
    {
         //you want to do something here if your image didn't open like maybe fpassthru an alternative image
    }
?>

您将需要的函数：或其他“from”函数之一，或者必须有
if（$im）
而不是
if（！$im）
    <?php
    // Set the content-type
    header('Content-type: image/png');

    /* Attempt to open */
        $im = @imagecreatefrompng('backgroundimage.png');

        /* See if it failed */
        if(!$im)
        {
            // Create some colors
        $white = imagecolorallocate($im, 255, 255, 255);
        $grey = imagecolorallocate($im, 128, 128, 128);
        $black = imagecolorallocate($im, 115, 150, 195);
        imagefilledrectangle($im, 0, 0, 399, 29, $white);

        // The text to draw
        $text = 'My Name';
        // Replace path by your own font path
        $font = 'AGENCYB.TTF';

        // Add some shadow to the text
        imagettftext($im, 20, 0, 11, 21, $grey, $font, $text);

        // Add the text
        imagettftext($im, 20, 0, 10, 20, $black, $font, $text);

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


        }else
    {
         //you want to do something here if your image didn't open like maybe fpassthru an alternative image
    }
?>