PHP作為一種廣泛應用於Web開發的程式語言,其數位處理函數廣泛使用於對數位進行處理的各種場景。本文將為大家介紹一些PHP數位處理函數的使用實例,希望對開發人員在實務上的數位處理工作有所幫助。
abs()函數用來傳回一個數的絕對值,它的使用非常簡單,只需要將要處理的數值作為參數輸入即可。以下是一個使用範例:
$num = -10;
$absvalue = abs($num);
echo "The absolute value of " . $num . " is: " . $ absvalue;
執行上述程式碼後,將輸出以下內容:
The absolute 值 of -10 is: 10
$num2 = -5.8; // -5
$num3 = 3.1415926; // 4
echo "Ceiling of " . $num1 . " is: " . ceil($num1) . "
";
echo "Ceiling of " . $num2 . " is: " . ceil($num2) . "
" ;
echo "Ceiling of " . $num3 . " is: " . ceil($num3);
Ceiling of -5.8 is: -5
Ceiling of 3.1415926 is: 4
$num2 = -5.8; // -6
$num3 = 3.1415926; // 3
echo "Floor of " . $num1 . " is: " . floor($num1) . "
";
echo "Floor of " . $num2 . " is: " . floor($num2) . "
" ;
echo "Floor of " . $num3 . " is: " . floor($num3);
Floor of -5.8 is: -6
Floor of 3.1415926 is: 3
$num2 = -5.8; // -6
$num3 = 3.1415926; // 3
$num4 = 3.1415926 ; // 3.142
echo "Round of " . $num1 . " is: " . round($num1) . "
";
echo "Round of " . $num2 . " is: " . round($num2) . "
";
echo "Round of " . $num3 . " is: " . round($num3) . "
";
echo "Round of " . $num4 . " is: " . round($num4, 3);
Round of -5.8 is : -6
Round of 3.1415926 is: 3
Round of 3.1415926 is: 3.142
echo "Square root of " . $num . " is: " . sqrt($num);
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