What are some common pitfalls when trying to access a column using a variable in PHP?

One common pitfall when trying to access a column using a variable in PHP is not properly concatenating the variable within the query string. To solve this issue, you can use curly braces to enclose the variable within the string. 

// Incorrect way
$column = "name";
$query = "SELECT $column FROM table_name";

// Correct way
$column = "name";
$query = "SELECT {$column} FROM table_name";

Keywords

variable column access PHP error

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