Example of removing json backslash in php

1. Remove backslashes through the "stripslashes($_POST['json']);" method.

2. Use "json_decode" to decode the string in JSON format.

The json string passed to PHP via AJAX is sometimes escaped with a backslash "\". When processing it in PHP, you need to remove the backslash first and then json_decode it.

$str = stripslashes($_POST['json']);$arr = json_decode($str,true);

stripslashes() function: Removes backslashes added by the addslashes() function.

json_decode: Decodes a string in JSON format.

Knowledge point expansion:

How to prevent json_encode from automatically escaping slashes "/" in PHP

Recently, when I saved the links crawled by the crawler into the mysql database, I found that when I saved the links using json_encode, the escape characters were displayed in the database. I don’t need this escape, it looks unclear and takes up storage space.

Later, I found that under the default circumstances, when using json_encode to convert the array to json format, the strings containing slashes in the data will be automatically escaped, but sometimes we don't need to escape them. This article explains how to use json_encode without automatically escaping slashes.

For the following array $a, there are two solutions:

$a = array(
 '//www.jb51.net,
 '//www.jb51.net,
 '//www.jb51.net,
 '//www.jb51.net,
 '//www.jb51.net
);

First, regular replacement:

$a = str_replace("\\/", "/", json_encode($a));
var_dump($a);

Second, if the PHP version is 5.4 and above:

var_dump(json_encode($a,JSON_UNESCAPED_SLASHES));

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