PHP Echoing JSON string into HTML Input value - Need character escape

Question

Here is a simplified version of my code that I am having a problem with.

$variable = "{\\\"JSON" //long JSON string created in Javascript with JSON.stringify
?> <input type="text" name="somename" value="<?php echo $variable; ?>"/> <?php

The input box only contains {\ I need a way to escape the entire JSON string

Thanks Alex

Marc B · Accepted Answer · 2014-02-19 17:01:14Z

23

You're outputting into an HTML context, so you need html-specific escaping:

<input ... value="<?php echo htmlspecialchars(json_encode($whatever)); ?>" />
                             ^^^^^^^^^^^^^^^^----

answered Feb 19, 2014 at 17:01

Marc B

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1 Comment

Assad Yaqoob Over a year ago

Thanks body I simply use this function htmlspecialchars($json_value) inside input value, save my time.

özgür köktürk · Accepted Answer · 2020-05-22 09:38:17Z

-1

$val= json_encode($val);

<input type="hidden" value="<?php echo htmlspecialchars($val); ?>" name="bye">

answered May 22, 2020 at 9:38

özgür köktürk

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