How can PHP be used to read the contents of a local file on a client's computer and pass it as a parameter?

To read the contents of a local file on a client's computer using PHP, you can create a form that allows the user to upload the file. Once the file is uploaded, you can read its contents and pass it as a parameter to a function or store it in a variable for further processing. 

<?php
if ($_FILES['file']['error'] === UPLOAD_ERR_OK) {
    $file_contents = file_get_contents($_FILES['file']['tmp_name']);
    
    // Pass $file_contents as a parameter to a function or store it in a variable
}
?>
<form method="post" enctype="multipart/form-data">
    <input type="file" name="file">
    <button type="submit">Upload File</button>
</form>

Keywords

PHP file handling read file client-side parameter passing

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