Modern PHP DOM classes help applications parse and save structured documents. Parses a local HTML file using the modern Dom HTML parser introduced in PHP 8.4. The API is separate from the older DOMDocument class.
What Is Dom\HTMLDocument::createFromFile() Method?
Parses a local HTML file using the modern Dom HTML parser introduced in PHP 8.4.
Its syntax is:
public static Dom\HTMLDocument::createFromFile(string $path, int $options = 0, ?string $overrideEncoding = null): Dom\HTMLDocument
The parameters are:
string $path— A local path to open or save, controlled by the application.int $options = 0— Optional configuration flags or parsing settings.?string $overrideEncoding = null— Character encoding to use when parsing the HTML document; null lets the parser detect it.
Return value: The declared return type is Dom\HTMLDocument. The DOM extension and a readable HTML file are required; parsing does not sanitize untrusted HTML.
Requirements: Requires PHP 8.4 or later with the DOM extension enabled. These examples are intended for local files.
Important: The DOM extension and a readable HTML file are required; parsing does not sanitize untrusted HTML.
Example 1: Basic Usage
The basic example focuses on the behavior of Dom\HTMLDocument::createFromFile() Method: parses a local HTML file using the modern Dom HTML parser introduced in PHP 8.4. Inputs are defined locally or shown as application-controlled paths.
<?php
$document = Dom\HTMLDocument::createFromFile(__DIR__ . "/sample.html");
echo $document->documentElement->nodeName;
The displayed value, file content or return status depends on the input and surrounding environment. Results involving local paths, identifiers or generated files are not fixed values.
Example 2: A Different Use Case
This second example illustrates another input or execution condition for Dom\HTMLDocument::createFromFile() Method. Notice the different checks, arguments, or output handling.
<?php
$document = Dom\HTMLDocument::createFromFile(__DIR__ . "/article.html", 0, "UTF-8");
echo $document->title;
This variation matters because the DOM extension and a readable HTML file are required; parsing does not sanitize untrusted HTML.
Practical Example: Using the Operation in an Application
The following example demonstrates how Dom\HTMLDocument::createFromFile() Method fits into a more complete file or archive workflow, including inputs and appropriate checks.
<?php
$document = Dom\HTMLDocument::createFromFile(__DIR__ . "/page.html");
$headings = $document->getElementsByTagName("h1");
foreach ($headings as $heading) { echo trim($heading->textContent) . "\n"; }
The operation shown is an illustrative script. Adapt the filenames, required permissions, and error handling to your own controlled application environment before running it.
Important Behavior and Edge Cases
- Function behavior: Parses a local HTML file using the modern Dom HTML parser introduced in PHP 8.4.
- Limitation: The DOM extension and a readable HTML file are required; parsing does not sanitize untrusted HTML.
- Availability: Requires PHP 8.4 or later with the DOM extension enabled. These examples are intended for local files.
Comparison With Related Functions
| Function or Method | Difference |
|---|---|
Dom\HTMLDocument::createFromFile() Method | Parses a local HTML file using the modern Dom HTML parser introduced in PHP 8.4. |
Dom\HTMLDocument::createFromString() | Parses HTML supplied as a string, rather than loading a file. |
Use Dom\HTMLDocument::createFromFile() Method for the specific behavior described above. The related operation, Dom\HTMLDocument::createFromString(), serves a different purpose; do not substitute it unless that different behavior is intended.
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Assuming this method is available on every PHP installation. | The DOM extension and a readable HTML file are required; parsing does not sanitize untrusted HTML. Check the required PHP version and extension while deploying the example. |
| Treating Dom\HTMLDocument::createFromString() as an interchangeable replacement for Dom\HTMLDocument::createFromFile() Method. | Parses HTML supplied as a string, rather than loading a file. |
Key Takeaways
- Parses a local HTML file using the modern Dom HTML parser introduced in PHP 8.4.
- The DOM extension and a readable HTML file are required; parsing does not sanitize untrusted HTML.
- Related operation: Dom\HTMLDocument::createFromString() — Parses HTML supplied as a string, rather than loading a file.
Dom\HTMLDocument::createFromFile() Method is useful when its specific behavior matches your application requirement. Keep paths controlled, check failures, and handle environment-dependent operations deliberately.