replace line breaks in a json encoded string error?

Question

I want to replace linebreaks with ' ' in PHP. Somehow I can't get it to work on this json encoded string [[0,"Hello World"],[1,"s\n"]] with $x = preg_replace('/\r\n|\r|\n\r|\n/m', ' ', $x);.

I'm out of ideas. And i know that the php code works with none-json encoded strings. Any ideas to fix this problem

Forgot this:

When I input the string as $xthe function or php code returns the same string. Instead of replacing \n with ' '.

I have also tried all relevant problems in Stackoverflow. none of them successful

What doesn't work about it? Provide "before" and "after" strings for clarity. — CodeCaster
– CodeCaster, Commented Sep 5, 2011 at 17:49
When I input the string as $xthe function or php code returns the same string. — einstein
– einstein, Commented Sep 5, 2011 at 17:52

loganfsmyth · Accepted Answer · 2011-09-05 17:59:59Z

1

preg_replace will try to parse the '\n' as an actual newline character, so you need some more escaping in there.

$x = preg_replace('/\\\r\\\n|\\\r|\\\n\\\r|\\\n/m', ' ', $x);

This is all kind of ugly though. Is there a reason you can't do a replace in the actual decoded strings instead?

answered Sep 5, 2011 at 17:59

loganfsmyth

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4 Comments

einstein Over a year ago

Thanks @Logan it worked! I dont want to replace in the client side though

CodeCaster Over a year ago

I seriously doubt that that works and fixes your problem. I tried the pattern from your question, and that works; this escaped one (though escaping isn't necessary since the pattern is between single quotes which does nothing with \n or \r) doesn't work.

loganfsmyth Over a year ago

I'll be honest, I kind of expected his sample code to work too, but when I tried it on my computer, it didn't. I tried it with the extra escaping and it works. I'm using Ubuntu 10.10 and PHP 5.3.3, you?

einstein Over a year ago

@Logan I've tested on the same system.

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