Question 40504 in PHP Question posted in
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Correct syntax to check multiple strings while user agent check – PHP

Is my syntax for checking multiple strings (existing of one of both strings) in a user agent correct?

I mean the part 'google|lighthouse'. If not, what should be the correct kind of writing?

<?php if (!isset($_SERVER['HTTP_USER_AGENT']) || stripos($_SERVER['HTTP_USER_AGENT'], 'google|lighthouse') === false): ?>
// code
<?php endif; ?>
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2

Answers


  1. 0

    I think you are not doing what you want to do. you are search for string ‘google|lighthouse’ inside the $_SERVER[‘HTTP_USER_AGENT’], I guess you want something like

    <?php if (!isset($_SERVER['HTTP_USER_AGENT']) || (stripos($_SERVER['HTTP_USER_AGENT'], 'google') === false) || (stripos($_SERVER['HTTP_USER_AGENT'], 'lighthouse') === false): ?>
// code
<?php endif; ?>
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  2. 0

    You need to use regular expression for that, otherwise you are just looking for literal sequence of google|lighthouse:

    <?php if (preg_match('/google|lighthouse/', $_SERVER['HTTP_USER_AGENT'] ?? '') !== 1): ?>
// code
<?php endif; ?>
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