替换字符串中的字符（以及数组中存在的字符）

Question

I need to replace certain characters.

$to_replace = array( "{username}", "{email}" );
$replace_with = array( $username, $email );

Also, $key_value is an array which gives me array key and values like:

array(
  'site' => 'abc.com',
  'blog' => 'blog.com'
  'roll' => 42
);

Using

$message = 'This is a {username} speaking, my email is {email}, and my site is {site} with roll {roll}';

$message = str_replace( $to_replace, $replace_with, $message );

This way I can replace username and email, How can I make it to site, blog and roll?

Thanks!

Answer 1

You can use the following solution:

$email = '[e-mail]';
$username = 'johndoe';

$to_replace = array( "{username}", "{email}" );
$replace_with = array( $username, $email );

$key_value = array(
    'site' => 'abc.com',
    'blog' => 'blog.com',
    'roll' => 42
);

//add the keys and values from $key_value to the replacement arrays.
$to_replace = array_merge($to_replace, array_keys($key_value));
$replace_with = array_merge($replace_with, array_values($key_value));

//surround every key with { and }.
array_walk($to_replace, function(&$value, $key) { $value = '{'.trim($value, '{}').'}';});

$message = 'This is a {username} speaking, my email is {email}, and my site is {site} with roll {roll}';
$message = str_replace( $to_replace, $replace_with, $message );

var_dump($message); //This is a johndoe speaking, my email is [e-mail], and my site is abc.com with roll 42

demo: https://ideone.com/isN90N