How can unexpected variables like "$sql" be properly handled in PHP scripts to avoid parse errors?

To properly handle unexpected variables like "$sql" in PHP scripts to avoid parse errors, you can use curly braces to explicitly define the variable name. This helps PHP to correctly interpret the variable and avoid any conflicts with reserved keywords or other unexpected variables. 

// Example of properly handling unexpected variable "$sql"
${'sql'} = "SELECT * FROM table_name";
echo ${'sql'};

Keywords

variable handling PHP scripts parse errors error handling syntax errors

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