A non-numeric value encountered php 7 tcpdf

Question

$header_x = (float)$this->original_lMargin + (float)($headerdata['logo_width'] * (float)1.1);

Severity: Warning

Message: A non-numeric value encountered

Filename: tcpdf/tcpdf.php

Line Number: 3422

Check by printing all values before this statement. You will get to know which value is non-numeric — Sambhaji Katrajkar, May 21 '18 at 05:23
convert to all value numeric type casting throught but not slow — Vishal Lunagariya, May 21 '18 at 05:37
If any value is in string format you can't convert it to float — Sambhaji Katrajkar, May 21 '18 at 05:49
Then you should check all the values before casting them in float — Sambhaji Katrajkar, May 21 '18 at 09:36

score 0 · Answer 1 · edited Dec 01 '20 at 21:45

I worked on this issue many days. In my case, I solved this problem on this way:

When you create a PDF with tcpdf you need to use ob_start(); at the top, then create instance object :

$pdf = new pdf(PDF_PAGE_ ..... BODY.. FOOTER, ETC,

and before output :

$pdf->Output('/media/Linux/Folder/document.pdf', 'F')

You need to end your ob with:

ob_end_clean();

I realised about the problem from create two or more PDFs continuously. You could try this.

I found the answer while visiting this:

1 Answers1