Regex to put missing quotes around keys of arrays [duplicate] - php

Question

This question already has answers here:
How to fix associative array keys that lack single quotation marks in multiple files
(4 answers)
Closed 7 months ago.
I try to correct my PHP-code and add to the quotes ' around the keys of the arrays in my source-code.
I have like 10,000 files to correct. Can I use some regular expressions to achieve that?
I tried to use this regular expression, but it is not perfect:
\$([0-9a-zA-z_\-]+)\[([0-9a-zA-z_\-]+)\]\[([0-9a-zA-z_\-]+)\]
to
\$$1['$2']['$3']
Example of what I want to change:
$_SESSION[Name][name_2] to $_SESSION['Name']['name_2']
$_POST[Name][na-me_2] to $_SESSION['Name']['na-me_2']
$_GET[Name][na-me_2] to $_GET['Name']['na-me_2']
$tab[name_one] to $tab['name_one']

Answer 1

We can most likely capture our indices with a group, then preg_replace it, maybe with an expression similar to:
\[(.+?)\]
Test
$re = '/\[(.+?)\]/m';
$str = '$_SESSION[Name][name_2]
$_POST[Name][na-me_2]
$_GET[Name][na-me_2]
$tab[name_one]';
$subst = '[\'$1\']';
$result = preg_replace($re, $subst, $str);
echo $result;
RegEx
If this expression wasn't desired, it can be modified/changed in regex101.com.
RegEx Circuit
jex.im visualizes regular expressions:
If we wish to have more constraints, we can surely update this expression. For example, if we would have already had keys with ' or ", then we can just add a new boundary such as all chars except ' and " in a char class:
[^'"]*
and our expression would become:
\[([^'"]*?)\]
Demo
Test
$re = '/\[([^\'"]*?)\]/m';
$str = '$_SESSION[Name][name_2]
$_POST[Name][na-me_2]
$_GET[\'Name\'][na-me_2]
$tab[name_one]
$_POST[Name]["na-me_2"]
$_POST[\'Name\']["na-me_2"]';
$subst = '[\'$1\']';
$result = preg_replace($re, $subst, $str);
echo $result;
Output
$_SESSION['Name']['name_2']
$_POST['Name']['na-me_2']
$_GET['Name']['na-me_2']
$tab['name_one']
$_POST['Name']["na-me_2"]
$_POST['Name']["na-me_2"]