I've faced an php sprintf
string in PHP Objects, patterns and practice book :
$txtout = "";
$pad = 4*$num;
$txtout .= sprintf( "%{$pad}s", "" );
I'm not sure, but I think the author is aimed to build padding(indent) based on $pad
, but actually it doesn't work, is this code syntactically right?
it does work to add spaces or padding - it's just that in plain html generally you will not see the spaces/padding - though inside a pre
tag it will become apparent.
$num=10;
$txtout = "";
$pad = 4*$num;
$txtout .= sprintf( "%{$pad}s", "" );
/* you should see the word hello spaced out across the page */
echo '<pre>',print_r( $txtout.'hello'.$txtout.'hello',true ),'</pre>';