How can PHP be used to check if the content of a textarea field matches the default value set in HTML?

To check if the content of a textarea field matches the default value set in HTML, you can use PHP to compare the value submitted in the form with the default value. This can be done by accessing the value of the textarea field in the $_POST superglobal array and comparing it with the default value. If the values match, you can perform the desired action. 

<?php
// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Get the value of the textarea field from the form
    $textareaValue = $_POST['textarea_name'];
    
    // Set the default value
    $defaultValue = "Default value";
    
    // Check if the textarea value matches the default value
    if ($textareaValue == $defaultValue) {
        echo "Textarea content matches default value.";
    } else {
        echo "Textarea content does not match default value.";
    }
}
?>

Keywords

PHP textarea field default value HTML validation

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