What are the PHP hexadecimal conversion functions?

php base conversion functions include: 1. bindec() function, which can convert binary to decimal; 2. decbin() function; 3. octdec() function; 4. decoc() function; 5. hexdec () function; 6. dechex() function; 7. base_convert() function.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php Base conversion function

##1. Bindec() function--convert binary numbers to decimal

can be used

bindec(binary string) Function, which can convert binary numbers to decimal numbers.

<?php
echo bindec("0011") . "<br>";
echo bindec("01") . "<br>";
echo bindec("11000110011") . "<br>";
echo bindec("111");
?>

Output result:

3
1
1587
7

2. decbin() function--convert decimal number to binary number

can be used

decbin(decimal value) function, which converts decimal numbers into binary numbers.

<?php
echo decbin("3") . "<br>";
echo decbin("1") . "<br>";
echo decbin("1587") . "<br>";
echo decbin("7");
?>

Output result:

11
1
11000110011
111

3. octdec() function--octal number to decimal number

You can use

octdec(octal String) function, which converts octal numbers to decimal numbers.

<?php
echo octdec("36") . "<br>";
echo octdec("12") . "<br>";
echo octdec("3063") . "<br>";
echo octdec("106");
?>

Output result:

30
10
1587
70

4. Decoc() function--convert decimal number to octal number

You can use

decoct(decimal value) Function that converts decimal numbers to octal numbers.

<?php
echo decoct("30") . "<br>";
echo decoct("10") . "<br>";
echo decoct("1587") . "<br>";
echo decoct("70");
?>

Output result:

36
12
3063
106

5. hexdec()--convert hexadecimal number to decimal number

You can use

hexdec (hex string) Function that converts hexadecimal numbers to decimal numbers.

<?php
echo hexdec("1e") . "<br>";
echo hexdec("a") . "<br>";
echo hexdec("11ff") . "<br>";
echo hexdec("cceeff");
?>

Output result:

30
10
4607
13430527

6. dechex()--convert decimal number to hexadecimal number

You can use

dechex (Decimal value) Function that converts a decimal number to a hexadecimal number.

<?php
echo dechex("30") . "<br>";
echo dechex("10") . "<br>";
echo dechex("1587") . "<br>";
echo dechex("70");
?>

Output result:

1e
a
633
46

7. base_convert() function--arbitrary base conversion

base_convert(number to be converted Or string, original base, base to be converted) function, it can convert between any bases

Example:

• Binary Number to decimal number

<?php
echo base_convert("0011",2,10) . "<br>";
echo base_convert("01",2,10) . "<br>";
echo base_convert("11000110011",2,10) . "<br>";
echo base_convert("111",2,10);
?>

• Conversion of decimal number to binary number

<?php
echo base_convert("3",10,2) . "<br>";
echo base_convert("1",10,2) . "<br>";
echo base_convert("1587",10,2) . "<br>";
echo base_convert("7",10,2);
?>

Output result:

• Convert octal number to decimal number

<?php
echo base_convert("36", 8, 10) . "<br>";
echo base_convert("12", 8, 10) . "<br>";
echo base_convert("3063", 8, 10) . "<br>";
echo base_convert("106", 8, 10);
?>

Output result:

• Convert decimal number to octal number

<?php
echo base_convert("30", 10, 8) . "<br>";
echo base_convert("10", 10, 8) . "<br>";
echo base_convert("1587", 10, 8) . "<br>";
echo base_convert("70", 10, 8);
?>

Output result:

• Convert hexadecimal number to decimal number

<?php
echo base_convert("1e", 16, 10) . "<br>";
echo base_convert("a", 16, 10) . "<br>";
echo base_convert("11ff", 16, 10) . "<br>";
echo base_convert("cceeff", 16, 10);
?>

Output result:

• Convert decimal number to hexadecimal number

<?php
echo base_convert("30", 10, 16) . "<br>";
echo base_convert("10", 10, 16) . "<br>";
echo base_convert("1587", 10, 16) . "<br>";
echo base_convert("70", 10, 16);
?>



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