How can PHP developers effectively troubleshoot and resolve issues related to array indexing in their code?

When troubleshooting array indexing issues in PHP, developers should first check if the index being used is within the bounds of the array. They can also use functions like `isset()` or `array_key_exists()` to verify if a specific index exists in the array. If the issue persists, developers can iterate through the array and print out the key-value pairs to understand the structure of the array better.

// Example code snippet to troubleshoot array indexing issues
$array = [1, 2, 3, 4, 5];

// Check if index is within bounds
if(isset($array[3])){
    echo "Value at index 3: " . $array[3];
} else {
    echo "Index 3 does not exist in the array.";
}

// Iterate through the array to understand its structure
foreach($array as $key => $value){
    echo "Key: " . $key . ", Value: " . $value . "\n";
}