How can debugging techniques be used to identify and resolve issues in PHP code related to letter counting?

Issue: To identify and resolve issues in PHP code related to letter counting, you can use debugging techniques such as printing out variables, using functions like var_dump or print_r to inspect data, and stepping through the code using breakpoints to track the flow of execution. PHP Code Snippet: 

<?php
$text = "Hello World";
$letter_count = array();

// Count the occurrence of each letter in the text
for ($i = 0; $i < strlen($text); $i++) {
    $letter = $text[$i];
    if (isset($letter_count[$letter])) {
        $letter_count[$letter]++;
    } else {
        $letter_count[$letter] = 1;
    }
}

// Print out the letter count
foreach ($letter_count as $letter => $count) {
    echo "Letter '$letter' appears $count times. <br>";
}
?>

Keywords

debugging PHP code letter counting error resolution techniques

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