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Q:

Image as a variable then insert it using FPDF and PHP

Hey everyone,

I'm working on a project that requires me to generate PDFs using FPDF in PHP. I have a specific requirement where I need to insert an image into the PDF, but the image itself is saved as a variable.

So here's what I'm trying to achieve:

1. I have an image saved in a variable (let's call it $imageVariable).
2. I want to use FPDF to generate a PDF and insert this image variable into it.

I've been searching online for a solution but haven't found anything that exactly matches my needs. Most examples I've come across use FPDF's Image() method and pass the image file path directly as an argument.

Is it possible to insert an image into a PDF using FPDF when the image is saved as a variable instead of a file path? If so, could you please provide me with an example or guide me in the right direction?

I'd really appreciate any help or suggestions you can provide. Thanks in advance!

All Replies

kattie.barrows

Hey there,

I've faced a similar situation before where I needed to insert an image stored as a variable into a PDF using FPDF in PHP. Fortunately, there is a way to achieve this!

What you can do is use the base64 encoding of your image and pass it as the image path to FPDF's Image() method. Here's an example code snippet to give you a better idea:

php
// Assuming $imageVariable contains the base64 encoded image string
$pdf = new FPDF();

// Add a new page to the PDF
$pdf->AddPage();

// Set the image path as a data URI
$imagePath = 'data:image/jpeg;base64,' . $imageVariable;

// Insert the image into the PDF
$pdf->Image($imagePath, 10, 10, 50, 0, 'JPEG');

// Output or save the PDF
$pdf->Output();


In the above code, we construct the image path as a data URI by appending the base64 encoded image string to the appropriate MIME type. Then, we simply use FPDF's Image() method by passing this image path variable, along with the desired dimensions and positioning on the PDF.

Make sure you have the necessary image format (JPEG, PNG, etc.) and adjust the dimensions and positioning according to your requirements.

I hope this helps! Let me know if you have any further questions.

ehill

Hey,

I've encountered a similar issue before while working with FPDF and PHP to generate PDFs. To insert an image stored as a variable into the PDF, I found a different approach that worked for me.

Instead of using FPDF's built-in Image() method, I utilized the SetX() and SetY() methods along with the Cell() method to achieve this. Here's an example code snippet for you:

php
$imageWidth = 50; // Width of the image
$imageHeight = 0; // Height will be automatically calculated

// Assuming $imageVariable contains the image as a variable
$pdf = new FPDF();

// Add a new page to the PDF
$pdf->AddPage();

// Set the position to insert the image
$pdf->SetX(10);
$pdf->SetY(10);

// Output the image using Cell()
$pdf->Cell($imageWidth, $imageHeight, $pdf->Image('@'.$imageVariable), 0, 0, 'L', false);

// Output or save the PDF
$pdf->Output();


In the above example, I set the X and Y positions where I wanted the image to appear on the PDF. Then, using the Cell() method, I passed the image variable using FPDF's Image() method along with the desired width and height.

Please note that in this approach, the height of the image will be automatically calculated based on the aspect ratio, maintaining the image's original proportions.

Give this alternative method a try and see if it works for your requirement. Let me know if you have any further questions or need more clarification.

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