php number conversion

PHP digital conversion mainly refers to converting numbers into different bases in PHP programming, such as converting decimal numbers into binary, octal or hexadecimal numbers. Through digital conversion, numbers can be easily processed, and data transmission and storage can be facilitated.

1. Number conversion function

In PHP, multiple number conversion functions are provided for conversion between different base systems. The following are commonly used number conversion functions:

1. decbin(): Convert a decimal number to a binary number and return the string type.
2. dechex(): Convert decimal number to hexadecimal number and return string type.
3. decoct(): Convert a decimal number to an octal number and return the string type.
4. bindec(): Convert a binary number to a decimal number and return the integer type.
5. hexdec(): Convert hexadecimal number to decimal number and return integer type.
6. octdec(): Convert octal number to decimal number and return integer type.

2. Number conversion examples

The following examples demonstrate how to convert numbers between different base systems.

1. Convert decimal number to binary number:

$num = 10;
$bin_num = decbin($num);
echo "The decimal number {$num} is converted into a binary number {$bin_num}";
?>

The result output is: the decimal number 10 is converted into a binary number 1010

2. Convert decimal number to hexadecimal number:

$num = 255;
$hex_num = dechex($num);
echo "The decimal number {$num} is converted to hexadecimal number {$hex_num}";
?>

The result output is: the decimal number 255 is converted to hexadecimal The number is ff

3. Convert the decimal number to octal number:

$num = 100;
$oct_num = decoct($ num);
echo "The decimal number {$num} is converted to octal number {$oct_num}";
?>

The result output is: the decimal number 100 is converted to octal number 144

4. Convert binary number to decimal number:

$num = "1010";
$dec_num = bindec($num );
echo "The binary number {$num} is converted into a decimal number and is {$dec_num}";
?>

The result output is: the binary number 1010 is converted into a decimal number and is 10

5. Convert hexadecimal number to decimal number:

$num = "FF";
$dec_num = hexdec( $num);
echo "Hexadecimal number {$num} is converted into decimal number {$dec_num}";
?>

The result output is: hexadecimal number FF is converted to decimal number 255

6. Convert octal number to decimal number:

$num = "144";
$dec_num = octdec($num);
echo "The octal number {$num} is converted into a decimal number {$dec_num}";
?>

The result output is: octal number 144 Convert to decimal number 100

3. Summary

Number conversion is one of the basic operations commonly used in PHP programming. Mastering the number conversion function can bring great convenience to developers. When performing digital conversion, you need to pay attention to the conversion between data types to avoid unnecessary errors. At the same time, in actual development, the appropriate base system can be selected for processing according to business needs to achieve the best results.

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