prepend the plus(+) symbol and append asterix(*) symbol to words in a query in PHP

I wonder how I can prepend the plus(+) symbol and append asterix(*) symbol to words in a query?

For instance, the query 'Car Bar' should b开发者_运维百科e '+Car* +Bar*'

php> echo preg_replace("/\w+/", '+\0*', "Car Bar")
+Car* +Bar*

Either explode() a string a prepend and append your symbols on string parts and later implode() them, or use regular expressions.

$string = preg_replace("/\w+/", "+$0*", $string);