/*
============================================================
Convert a decimal-like value to an integer in PHP.
This program demonstrates:
• Conversion using round(), which rounds to the nearest integer.
• Conversion using intval(), which truncates toward zero.
• Conversion using (int), which also truncates.
• A helper function that prints all conversion styles.
Notes:
• PHP does not have a distinct "long" type; integers expand as needed.
• round() follows standard rounding rules.
• intval() and (int) remove the fractional part.
============================================================
*/
/* Converts a decimal to an integer using rounding */
function convert_decimal_to_integer(float $value): int {
return round($value);
}
/* Converts a decimal to an integer using truncation */
function cast_decimal_to_integer(float $value): int {
return intval($value); // same as (int)$value
}
/* Prints both conversion styles for comparison */
function show_conversions(float $value): void {
echo "Input decimal: {$value}\n";
$rounded = convert_decimal_to_integer($value);
$truncated = cast_decimal_to_integer($value);
echo "Rounded (round): {$rounded}\n";
echo "Truncated (intval): {$truncated}\n\n";
}
/* Main */
show_conversions(12.7);
show_conversions(12.3);
show_conversions(-5.8);
show_conversions(42.0); // already an integer
/*
run:
Input decimal: 12.7
Rounded (round): 13
Truncated (intval): 12
Input decimal: 12.3
Rounded (round): 12
Truncated (intval): 12
Input decimal: -5.8
Rounded (round): -6
Truncated (intval): -5
Input decimal: 42
Rounded (round): 42
Truncated (intval): 42
*/
