Php sprintf format string

Question

I know about sprintf, but how can I use the same parameter anywhere? Example

sprintf("blabla %s 11111 %s", "test"); 

- let's say a few parameters, but I want to put the "test" in two places without a duplicate

Answer 1

Use numbering notation %$ :

 sprintf('blabla %1$s 11111 %1$s', "test"); 

Here, both occurrences of %1$s will be replaced by "test" . This can be found on the sprintf() page.

Answer 2

This is called "Argument Exchange" and is documented in Example 3 here: http://php.net/sprintf Use "%1$s" to use argument 1, you can use this several times in your format string, as shown in Example 4 of the php online documentation.