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<tidy::__constructtidy::$errorBuffer>
^tidyLast updated: Mon, 26 Oct 2026

tidy::diagnose

tidy_diagnose

(PHP 5, PHP 7, PHP 8, PECL tidy >= 0.5.2)

tidy::diagnose -- tidy_diagnose — Run configured diagnostics on parsed and repaired markup

Description

Object-oriented style

public function tidy::diagnose(): bool

Procedural style

function tidy_diagnose(tidy $tidy): bool

Runs diagnostic tests on the given tidy tidy, adding some more information about the document in the error buffer.

Parameters

tidy

The Tidy object.

Return Values

Returns true on success or false on failure.

Examples

Example #1 tidy::diagnose() example

<?php

$html = <<< HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<p>paragraph</p>
HTML;

$tidy = tidy_parse_string($html);
$tidy->cleanRepair();

// note the difference between the two outputs
echo $tidy->errorBuffer . "\n";

$tidy->diagnose();
echo $tidy->errorBuffer;

?>

The above example will output:

line 4 column 1 - Warning: <p> isn't allowed in <head> elements
line 4 column 1 - Warning: inserting missing 'title' element
line 4 column 1 - Warning: <p> isn't allowed in <head> elements
line 4 column 1 - Warning: inserting missing 'title' element
Info: Doctype given is "-//W3C//DTD XHTML 1.0 Strict//EN"
Info: Document content looks like XHTML 1.0 Strict
2 warnings, 0 errors were found!

See Also

  • tidy::errorBuffer()

<tidy::__constructtidy::$errorBuffer>
^tidyLast updated: Mon, 26 Oct 2026