Examining echo String concat in PHP: echo a,b,c; vs. echo a.b.c;

phpstringconcat.php

function foo (){
echo "in \n";
return "bar \n";
}

echo "\nComma:\n";
echo foo (),foo (),foo ();
echo "\nDot:\n";
echo foo ().foo ().foo ();
echo "\n";

/*
Result: . concat will execute all first, while m, will execute between outputs
Output:

Comma:

in
bar
in
bar
in
bar

Dot:

in
in
in
bar
bar
bar

*/

phpstringconcat.php.mkd

Further Reading

• PHP-Manual on echo()
• PHP echo with commas versus concatenation