What are common causes of "Parse error: parse error, unexpected $" in PHP code?

The "Parse error: parse error, unexpected $" in PHP code typically occurs when there is a syntax error, such as a missing semicolon or a misplaced variable. To solve this issue, carefully review the code for any syntax errors and ensure that all variables are properly declared and used. Example PHP code snippet:

<?php
// Incorrect code with parse error
$variable = "Hello"
echo $variable;

// Corrected code without parse error
$variable = "Hello";
echo $variable;
?>