PHP output text to the image (text watermark) code

Share a piece of PHP code, you can write text to the image of the function, the need for friends to refer to it. Sometimes, we need to put some text on the picture, that is, the so-called text watermark. This section of the code that we share, with the help of PHP's image functions, can be implemented. If the file does not exist, a related error message will be returned for the image display. Therefore, before you do the text watermark, you should check whether the file exists, check the file type and so on. Introduced so much, look at the code, as follows:

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