What is the issue with maintaining leading zeros in a PHP loop?

When using a PHP loop to iterate over numbers with leading zeros, the leading zeros are typically removed by default because PHP treats them as octal values. To maintain leading zeros in a PHP loop, you can use the `sprintf()` function with a format specifier to ensure that the numbers are output with the desired number of leading zeros. 

// Using sprintf() to maintain leading zeros in a PHP loop
for ($i = 1; $i <= 10; $i++) {
    $number = sprintf("%02d", $i); // Output number with 2 leading zeros
    echo $number . "\n";
}

Keywords

leading zeros PHP loop string manipulation str_pad number formatting

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