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I'm trying to send two parameters from PHP to Javascript, but I get second undefined parameter.

<?php echo '<button onclick="deleteImage(\'' . $image->photo_id . ',' . $content->content_id . '\')" >Delete</button>'; ?>

Please help, thank you

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  • Please show us the code where $content->content_id is supposedly initialized, if that's the one that's undefined. Commented Feb 17, 2016 at 13:39

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I think you forget to escape some ' :

<?php echo '<button onclick="deleteImage(\'' . $image->photo_id . '\',\'' . $content->content_id . '\')" >Delete</button>'; ?>
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