How can PHP developers troubleshoot issues with table width and CSS not being applied in HTML emails?

To troubleshoot issues with table width and CSS not being applied in HTML emails, PHP developers can ensure that the CSS styles are inline within the HTML tags, as some email clients do not support external stylesheets. They can also use table-based layouts instead of div-based layouts for better compatibility. Additionally, testing the email in different email clients and using tools like Litmus can help identify any rendering issues. 

<?php
$html = '<!DOCTYPE html>
<html>
<head>
<style>
    table { width: 100%; }
</style>
</head>
<body>
<table>
    <tr>
        <td>Content here</td>
    </tr>
</table>
</body>
</html>';

// Send email with PHP mail function
$to = 'recipient@example.com';
$subject = 'Test Email';
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= 'From: sender@example.com' . "\r\n";

mail($to, $subject, $html, $headers);
?>

Keywords

PHP HTML emails CSS table width troubleshooting

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