How can variable naming conventions in PHP help prevent confusion and errors when working with arrays?

Variable naming conventions in PHP can help prevent confusion and errors when working with arrays by providing clear and descriptive names for variables that indicate their purpose and contents. By following a consistent naming convention, developers can easily understand the purpose of each variable and avoid mistakes such as using the wrong variable or misinterpreting its contents. This can lead to more readable and maintainable code, reducing the likelihood of bugs and errors in array manipulation.

// Example of using variable naming conventions in PHP to work with arrays
$studentGrades = [
    'Alice' => ['math' => 90, 'science' => 85],
    'Bob' => ['math' => 88, 'science' => 92]
];

// Accessing and displaying grades using descriptive variable names
$aliceMathGrade = $studentGrades['Alice']['math'];
$bobScienceGrade = $studentGrades['Bob']['science'];

echo "Alice's math grade: " . $aliceMathGrade . "\n";
echo "Bob's science grade: " . $bobScienceGrade;