How can I replace preg_replace with preg_replace_callback in PHP5.4? [duplicate]

Question

I have a PHP page in which I am using following command:-

$abc = preg_replace('/&#(\d+);/me', "chr(\\1)", $abc);

Now I want to replace the above command with the "preg_replace_callback" function as preg_replace is deprecated in PHP 5.4 .

How can I achieve it?

EnKrypt · Accepted Answer · 2014-10-21 11:19:53Z

-1

Try using anonymous functions like this :

$abc = preg_replace_callback(
    '/&#(\d+);/me',
    function ($match) 
    { 
        return chr($match[1]);
    },
    $abc
);

edited Oct 21, 2014 at 11:19

answered Oct 21, 2014 at 10:55

EnKrypt

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6 Comments

Gaurang Over a year ago

Thanks a lot for the reply. I used the code you specified but I am getting an error in it saying:preg_replace_callback() "Requires argument 2, 'function($a) { return chr($a[1]); }', to be a valid callback"

EnKrypt Over a year ago

Not sure why that was happening. Maybe $a is a reserved variable. Try the edited code.

Gaurang Over a year ago

Actually it is giving me error at the function keyword saying incorrect syntax.Do I need to put the entire thing in single quotes?

EnKrypt Over a year ago

Not quite. The documentation requires it to be an actual function without quotes. Allow me to add indentation to the code.

Gaurang Over a year ago

Yup I too saw the definition. But I am getting the same issue.

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