Replace all occurences of char inside quotes on PHP

Question

How could I convert something like this:

\"hi (text here) and (other text)\" come (again)

To this:

\"hi \\(text here\\) and \\(         


        

Answer 1

You can use preg_replace_callback for this;

// outputs: hi \(text here\) and \(other text\) come (again)
print preg_replace_callback('~"(.*?)"~', function($m) {
    return '"'. preg_replace('~([\(\)])~', '\\\$1', $m[1]) .'"';
}, '"hi (text here) and (other text)" come (again)');

What about already escaped strings;

// outputs: hi \(text here\) and \(other text\) come (again)
print preg_replace_callback('~"(.*?)"~', function($m) {
    return '"'. preg_replace('~(?:\\\?)([\(\)])~', '\\\$1', $m[1]) .'"';
}, '"hi \(text here\) and (other text)" come (again)');