Description:
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---
From manual page: http://www.php.net/language.types.string
---

There is probably a documentation error in example #8:

<?php
echo "He drank some juice made of $juice[0]s.".PHP_EOL;
echo "$people->robert greeted the two $people->smiths.";
?>

outputs

He drank some juice made of s.
Robert Paulsen greeted the two .

You should use complex (curly) syntax in such cases, because you really want to output:

He drank some juice made of apples.
Robert Paulsen greeted the two Smiths.

If the author intended to show that simple syntax doesn't work in such cases, it would be better to provide comments/text explaining this:

echo "He drank some juice made of $juice[0]s.".PHP_EOL; // Invalid; s is interpreted as a part of variable name
echo "$people->robert greeted the two $people->smiths."; // Invalid; s is interpreted as a part of variable name