How can debugging techniques like echoing output or using die() with mysql_error() help troubleshoot PHP code errors?

Debugging techniques like echoing output or using die() with mysql_error() can help troubleshoot PHP code errors by providing immediate feedback on what is happening in the code at a specific point. Echoing output can help display variables or messages to track the flow of the code, while die() with mysql_error() can show any errors that occur during database operations, helping to pinpoint the issue quickly. 

// Example of using echoing output to debug PHP code
$variable = "Hello World";
echo $variable;

// Example of using die() with mysql_error() to debug PHP code
$query = "SELECT * FROM table_name";
$result = mysqli_query($connection, $query) or die(mysqli_error($connection));

Keywords

debugging techniques echoing output die() mysql_error() PHP code errors

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