swap two words in a string php

Question

Suppose there\'s a string \"foo boo foo boo\" I want to replace all fooes with boo and booes with foo. Expected output is \"boo foo boo foo\". What I get is \"foo foo foo fo

Answer 1

Perhaps using a temporary value like coo.

sample code here,

$a = "foo boo foo boo";
echo "$a\n";
$b = str_replace("foo","coo",$a);
$b = str_replace("boo","foo",$b);
$b = str_replace("coo","boo",$b);
echo "$b\n";