What are the potential issues with opening a new PHP script within an echo statement?

Opening a new PHP script within an echo statement can lead to syntax errors or unexpected behavior, as PHP code within an echo statement is treated as a string literal. To solve this issue, you can close the echo statement, execute the PHP code separately, and then concatenate the result back into the echo statement.

<?php
echo "Hello, ";

// Execute PHP code separately
$variable = "World";

// Concatenate the result back into the echo statement
echo $variable;
?>