PHP dechex()用法及代碼示例

dechex() 是預定義的 PHP 數學函數，用於將十進製數轉換為十六進製數。

用法:

string dechex ( int $number );

參數	描述	必需/可選
number	指定十進製值	Required

例子1

<?php
$decimal=7;
echo "Your Decimal number is:".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is:".dechex($decimal);
?>

輸出：

Your Decimal number is:7
By using 'dechex()'function, your Hexadecimal number is:7

例子2

<?php
$decimal=10;
echo "Your Decimal number is:".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is:".dechex($decimal);
?>

輸出：

Your Decimal number is:10
By using 'dechex()'function, your Hexadecimal number is:a

例子3

<?php
$decimal=30;
echo "Your Decimal number is:".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is:".dechex($decimal);
?>

輸出：

Your Decimal number is:30
By using 'dechex()'function, your Hexadecimal number is:1e

示例 4

<?php
$decimal=1587;
echo "Your Decimal number is:".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is:".dechex($decimal);
?>

輸出：

Your Decimal number is:1587
By using 'dechex()'function, your Hexadecimal number is:633

例 5

<?php
$decimal=70;
echo "Your Decimal number is:".$decimal."<br>";	
echo "By using 'dechex()'function, your Hexadecimal number is:".dechex($decimal);
?>

輸出：

Your Decimal number is:70
By using 'dechex()'function, your Hexadecimal number is:46

例 6

<?php
// The output below assumes a 32-bit platform.
// Note that the output is the same for all values.
echo dechex(-1)."\n";
echo dech ex(PHP_INT_MAX * 2 + 1)."\n";
echo dechex(pow(2, 32) - 1)."\n";
?>

輸出：

ffffffff
ffffffff
ffffffff

相關用法

注：本文由純淨天空篩選整理自 PHP dechex() Function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。