In the provided PHP code snippets, what potential pitfalls or syntax errors can be identified that may be causing the scripts not to display correctly, and how can they be addressed?

One potential issue in the provided PHP code snippets is the incorrect usage of the concatenation operator (.) within echo statements. To fix this issue, the concatenation operator should be used properly to concatenate strings and variables.

// Incorrect usage of concatenation operator
echo "Hello" $name;

// Corrected code using concatenation operator
echo "Hello " . $name;