Replace Array Callback

Question

I have a string like:

"Hello ? my name is ? and i am ? years old."

Every "?" is a variable and I want to replace each variable by an array. So I have this array:

$data = array('Mister,','Tom','30');

So I am looking for a clean way to transform all ? by its equally array index, so that I get:

"Hello Mister, my name is Tom and i am 30 years old."

Also I want to pass a function like ucfirst() to each array entry when they are replaced.

Anybody has an idea how to do it?

Niko Sams · Accepted Answer · 2012-03-04 20:59:12Z

5

Using preg_replace_callback:

$str = "Hello ? my name is ? and i am ? years old.";
$data = array('Mister,','Tom','30');
$str = preg_replace_callback('/\?/', function($match) use(&$data) {
    return ucfirst(array_shift($data));
}, $str);

answered Mar 4, 2012 at 20:59

Niko Sams

4,4244 gold badges31 silver badges46 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

knittl · Accepted Answer · 2012-03-04 21:05:05Z

1

str_replace can do that (in combination with array_map:

$array = array('Mister,', 'Tom', '30');
$new_string = str_replace(array('?', '?', '?'),
    array_map(function($v) { return ucfirst($v); }, $array),
    $old_string
);

edited Mar 4, 2012 at 21:05

answered Mar 4, 2012 at 20:56

knittl

269k59 gold badges339 silver badges405 bronze badges

3 Comments

Niko Sams Over a year ago

that won't work as it replaces all occurences of ? with Mister

pila Over a year ago

it replaces all occurrences of ? with Array

knittl Over a year ago

@NikoSams: My bad, that only works the other direction (search being an array, replace a string).

Peter Kiss · Accepted Answer · 2012-03-04 20:55:41Z

0

sprintf() with call_user_func_array()?

array_walk()?

answered Mar 4, 2012 at 20:55

Peter Kiss

9,3292 gold badges25 silver badges38 bronze badges

Comments

yehuda · Accepted Answer · 2012-03-04 20:58:18Z

-1

$string = 'String ? etc etc';
$string = preg_replace("/?/",array_shift($data), $string, 1);
$string = preg_replace("/?/",array_shift($data), $string, 1);
$string = preg_replace("/?/",array_shift($data), $string, 1);

echo $string

answered Mar 4, 2012 at 20:58

yehuda

1,2822 gold badges11 silver badges21 bronze badges

3 Comments

yehuda Over a year ago

Why the downvote? This is the simplest code. It could easily be put in a loop. The 1 at the end is a limiter which says only once a time.

pila Over a year ago

It's not my downvote. But i think the person thought it repeated too much.

yehuda Over a year ago

Oh, I suppose i should put it into a loop then. Thanks! It was my upvote though ;)

Collectives™ on Stack Overflow

Replace Array Callback

4 Answers 4

Comments

3 Comments

Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

3 Comments

Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related