replace string placeholders with array values

Question

I hava a string like:

$my_string = "RGB colors are xxx, xxx, xxx";

Also have an array:

$my_array = ["red", "green", "blue"];

I would like to get a string like:

echo $my_string; //RGB colors are red, green, blue

Is there a one liner that can make this replacements? That is a string with same placeholder that gets replaced with each value from the array.

Do the placeholders need to be "xxx"? Can you change them? If so, try using sprintf() (possibly with call_user_func_array). — gen_Eric
– gen_Eric, Commented Jan 22, 2014 at 19:47
possible duplicate of Multiple replace (probably preg_replace) of same string with array — salathe
– salathe, Commented Jan 22, 2014 at 19:52

Mark Reed · Accepted Answer · 2014-01-22 21:36:51Z

1

This is not as straightforward as it could be, because str_replace is a global replace - the first call will replace all xxxs with the replacement value. You can use preg_replace, and call it multiple times with $limit=1.

  $my_string = "RGB colors are xxx, xxx, xxx";
  $my_array = [ "red", "green", "blue" ];
  $placeholder = '/xxx/';
  foreach ($my_array as $color) {
    $my_string = preg_replace($placeholder, $color, $my_string, 1);
  }

Note that that modifies the original string; you should make a copy and use that instead of $my_string inside the loop if you don't want that to happen.

You could also use sprintf as suggested in the comments, with a little preparation:

  $args = $my_array;
  array_unshift($args, str_replace(['%','xxx'], ['%%','%s'], $my_string));
  $result = call_user_func_array(sprintf, $args);

edited Jan 22, 2014 at 21:36

answered Jan 22, 2014 at 19:57

Mark Reed

96k17 gold badges149 silver badges189 bronze badges

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

Comments

Hassan · Accepted Answer · 2014-01-22 19:53:15Z

0

Following line can do this. You can allow loop through array to replace all xxx with respective values in array

   preg_replace('/xxx/',$my_array[2], preg_replace('/xxx/', $my_array[1], preg_replace('/xxx/', $my_array[0], $my_string, 1), 1), 1);

answered Jan 22, 2014 at 19:53

Hassan

7427 silver badges13 bronze badges

Comments

hpelleti · Accepted Answer · 2014-01-22 20:01:14Z

0

Try this:

$my_string = "RGB colors are TO_BE_REPLACE";
$my_array = ["red", "green", "blue"];
echo str_replace('TO_BE_REPLACE', implode(',', $my_array), $my_string); //RGB colors are red, green, blue

answered Jan 22, 2014 at 20:01

hpelleti

3421 silver badge6 bronze badges

Collectives™ on Stack Overflow

replace string placeholders with array values

3 Answers 3

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related