Question
Answer and Explanation
Converting percentages to decimals and vice-versa is a common task in programming. Here's how you can do it using PHP:
1. Converting Percentage to Decimal:
To convert a percentage to a decimal, you need to divide the percentage value by 100. Here's the PHP code:
<?php
function percentageToDecimal($percentage) {
return $percentage / 100;
}
// Example usage:
$percentage = 75;
$decimal = percentageToDecimal($percentage);
echo "The decimal value of " . $percentage . "% is: " . $decimal . "<br>"; // Output: The decimal value of 75% is: 0.75
$percentage = 120;
$decimal = percentageToDecimal($percentage);
echo "The decimal value of " . $percentage . "% is: " . $decimal; // Output: The decimal value of 120% is: 1.2
?>
In the code above, the function percentageToDecimal() takes a percentage value as input and returns the decimal equivalent.
2. Converting Decimal to Percentage:
To convert a decimal back to a percentage, you need to multiply the decimal value by 100. Here's the PHP code:
<?php
function decimalToPercentage($decimal) {
return $decimal 100;
}
// Example usage:
$decimal = 0.85;
$percentage = decimalToPercentage($decimal);
echo "The percentage value of " . $decimal . " is: " . $percentage . "%<br>"; // Output: The percentage value of 0.85 is: 85%
$decimal = 1.5;
$percentage = decimalToPercentage($decimal);
echo "The percentage value of " . $decimal . " is: " . $percentage . "%"; // Output: The percentage value of 1.5 is: 150%
?>
In the above code, the function decimalToPercentage() takes a decimal value as input and returns the percentage equivalent.
Additional considerations:
You can use the number_format() function to format your percentages or decimals to a specific number of decimal places. This is useful for controlling the output display.
Remember that percentages above 100% or below 0% are perfectly valid in many contexts.
By using these simple functions, you can efficiently convert between percentages and decimals within your PHP applications.