Deprecations message when calling writeHTMLCell() with specifics HTML codes

[sdespont]

When I call this function with the following comments, deprecation are trigged $tcPdf->writeHTMLCell(190, 70, null, null, $comment, 0, 0);

$comment = "<p><strong>sdfas </strong>df</p>";
Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated

TCPDF/tcpdf.php

Line 18547 in f67b761

$postlen = strlen($dom[$key]['value']);

---

$comment = "<p>A <strong>B</strong>, C.<br /><br />D<strong> E,</strong> F</p>";
Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated

TCPDF/tcpdf.php

Line 17695 in f67b761

if (isset($line_align_data) AND (($line_align_data[0] == ($key - 1)) OR (($line_align_data[0] == ($key - 2)) AND (isset($dom[($key - 1)])) AND (preg_match('/^([\s]+)$/', $dom[($key - 1)]['value']) > 0)))) {

---

$comment = "<p>A <strong>B</strong>, C.<br /><br />D<strong> E,</strong> F</p>";
Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated

TCPDF/tcpdf.php

Line 6395 in f67b761

if (strlen($txt) == 0) {

Could you have a look ?

[canyonwebworks]

Hi! I cannot reproduce this with the $comment values you gave when I use the latest version of TCPDF, using PHP versions 7.4 and 8.4.

$comment = "<p><strong>sdfas </strong>df</p>";
$tcPdf->writeHTMLCell(190, 70, null, null, $comment, 0, 0);

works.

$comment = "<p>A <strong>B</strong>, C.<br /><br />D<strong> E,</strong> F</p>";
$tcPdf->writeHTMLCell(190, 70, null, null, $comment, 0, 0);

works, too. If you are still having a problem, what version of TCPDF and PHP you are using, and can you provide more lines of your code and note if you have changed any config settings.

[sdespont]

@littlepackage yes it "works" but there are deprecation notices to resolve.

<?php
error_reporting(E_ALL);
ini_set('display_errors', '1');
require './vendor/tecnickcom/tcpdf/tcpdf.php';

$tcPdf1 = new TCPDF('P', 'mm', 'A4', true, 'ISO-8859-1');
$tcPdf1->AddPage();
$comment = "<p><strong>sdfas </strong>df</p>";
$tcPdf1->writeHTMLCell(190, 70, null, null, $comment, 0, 0);
$tcPdf1->Output("C:/DEV/www/prod/1.pdf", 'F');

$tcPdf2 = new TCPDF('P', 'mm', 'A4', true, 'ISO-8859-1');
$tcPdf2->AddPage();
$comment = "<p>A <strong>B</strong>, C.<br /><br />D<strong> E,</strong> F</p>";
$tcPdf2->writeHTMLCell(190, 70, null, null, $comment, 0, 0);
$tcPdf2->Output("C:/DEV/www/prod/2.pdf", 'F');

$tcPdf3= new TCPDF('P', 'mm', 'A4', true, 'ISO-8859-1');
$tcPdf3->AddPage();
$comment = "<p>A <strong>B</strong>, C.<br /><br />D<strong> E,</strong> F</p>";
$tcPdf3->writeHTMLCell(190, 70, null, null, $comment, 0, 0);
$tcPdf3->Output("C:/DEV/www/prod/3.pdf", 'F');

$ php issue.php
PHP Deprecated:  strlen(): Passing null to parameter #1 ($string) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 18548

Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 18548
PHP Deprecated:  strlen(): Passing null to parameter #1 ($string) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 6395

Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 6395
PHP Deprecated:  preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 17696

Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 17696
PHP Deprecated:  strlen(): Passing null to parameter #1 ($string) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 6395

Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 6395
PHP Deprecated:  preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 17696

Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in C:\DEV\www\prod\vendor\tecnickcom\tcpdf\tcpdf.php on line 17696

Would you like a PR ? It can be easily fix like this :

$postlen = strlen($dom[$key]['value'] ?? "");

if (isset($line_align_data) AND (($line_align_data[0] == ($key - 1)) OR (($line_align_data[0] == ($key - 2)) AND (isset($dom[($key - 1)])) AND (preg_match('/^([\s]+)$/', $dom[($key - 1)]['value'] ?? "") > 0)))) {

if (strlen($txt ?? "") == 0) { ... }