$re = '/\{\s*(?<key1>[^=\s*]+)\s*=\s*(?<value1>\([^)]+\))\s*(?:,\s*(?<key2>[^=\s*]+)\s*=\s*(?<value2>\([^)]+\))\s*)?\}/';
$str = 'The string I receive is something like this format, representing the changes: {xRate=(250.0, 260.0), yValue=(1.51, 1.54)}.
I would like to get something like [[\'xRate\', \'(250.0, 260.0)\'],[\'yValue\', \'(1.51, 1.54)\']] or at least have a regex to work since I can\'t figure it out.
I tried /,*\\s*(.*)=\\s*(.*)/ but it creates group1 as test=(23, 34), var and group2 as (true , false) in test=(23, 34), var=(true , false), for example.
{xRate=(250.0, 260.0) , yValue =(1.51, 1.54)} ... { xRate = (250.0, 260.0) }
... { yValue=(1.51, 1.54) } ... { xRate = ( 250.0 , 260.0), yValue=(1.51, 1.54) }
';
$subst = "[['$1', '$2'], ['$3', '$4']]";
$result = preg_replace($re, $subst, $str);
echo "The result of the substitution is ".$result;
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php