What are the potential pitfalls of using apostrophes instead of single quotation marks in SQL queries in PHP?

Using apostrophes instead of single quotation marks in SQL queries in PHP can lead to syntax errors or unexpected behavior, as apostrophes are not recognized as valid quotation marks in SQL. To resolve this issue, always use single quotation marks to encapsulate strings in SQL queries in PHP. 

// Incorrect usage of apostrophes
$sql = "SELECT * FROM users WHERE name = 'John's'";

// Corrected query using single quotation marks
$sql = "SELECT * FROM users WHERE name = 'John\'s'";

Keywords

SQL injection security vulnerability mysqli_real_escape_string prepared statements data sanitization

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