How can debugging techniques like echo and var_dump be used to troubleshoot issues with array manipulation in PHP?

When troubleshooting array manipulation issues in PHP, debugging techniques like echo and var_dump can be used to inspect the contents of arrays at different stages of manipulation. By using echo to print out specific array values or var_dump to display the entire array structure, you can identify any unexpected or incorrect data. This can help pinpoint where the issue lies and guide you in fixing it. 

// Example code snippet demonstrating the use of echo and var_dump for debugging array manipulation issues

// Initial array
$array = [1, 2, 3, 4, 5];

// Manipulating the array
unset($array[2]); // Removing element at index 2

// Debugging using echo
echo "Array after removing element at index 2: ";
echo $array[0]; // Output: 1
echo $array[1]; // Output: 2
echo $array[2]; // Output: 4
echo $array[3]; // Output: 5

// Debugging using var_dump
var_dump($array);

Keywords

debugging echo var_dump array manipulation PHP

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