How can PHP variables be linked to HTML text fields for display and input?

To link PHP variables to HTML text fields for display and input, you can use PHP echo statements to output the variable value within the HTML input fields. For displaying the variable value, you can simply echo the variable within the HTML text field. For input, you can set the value attribute of the input field to the PHP variable so that it pre-fills with the variable value. 

<?php
// Define a PHP variable
$name = "John Doe";

// Display the variable value in an HTML text field
echo '<input type="text" value="' . $name . '">';

// Set the value attribute of an HTML text field to the PHP variable for input
echo '<input type="text" name="username" value="' . $name . '">';
?>

Keywords

PHP variables HTML text fields input

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