"sprintf" sentence give me bad output

Question

I have this line:

$lang = 'Estimado %s, tiene un saldo disponible de <strong>%s</strong> USD para realizar llamadas';

Then I intended to use sprintf function to output a right sentence, this is the code:

$userName = "SomeName";
$account = "13.1288";
sprintf($lang, $userName, number_format($account, 2));

But the output is just:

SomeName

What is wrong?

Nothing wrong with that snippet, except that you're not assigning the output from the sprint() call - http://ideone.com/NlfFUR — Mark Baker, May 29 '14 at 16:35
How are creating that output? Nothing in the code you show echos anything. — gen_Eric, May 29 '14 at 16:48

score 3 · Accepted Answer · answered May 29 '14 at 16:35

3

sprintf doesn't actually print the text, it returns it as a string.

You probably meant to use printf instead, or you can echo the results of your sprintf statement.

answered May 29 '14 at 16:35

Mr. Llama

score 1 · Answer 2 · answered May 29 '14 at 16:37

1

sprintf returns a string with the formatted text (hence the 's' at the start). You can echo it echo sprintf(...) or just use printf.

answered May 29 '14 at 16:37

Nicolas Defranoux

`echo sprintf()` is an "antipattern". There is absolutely no reason that anyone should ever write `echo sprintf()` -- it should be `printf()` without `echo` every time. – mickmackusa Apr 13 '22 at 08:09

2 Answers2