Replace string with newline PHPStorm

You have to check "Regex" and replace whatever you like with \n.

• Search for: ,
• Replace by: =>"iiii",\n
• DO NOT FORGET to check Regex option (as shown on 1st screenshot below)
• Hit "Replace all" button

BEFORE:

AFTER:

Update for anyone else, you can just click the highlighted enter icon below to do new line in search and replace;

EDIT

Checkout @fromvega's answer if you have PhpStorm 2019, it is much more straightforwarrd. If your version is older, though, keep reading.

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There is a way.

When you hit Ctrl-R to do a replace, click the Multiline icon (see the little white icon on the screenshot). You'll see two larger textboxes appear:

Just put a newline in the second box.