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PHP bin2hex() Function

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The bin2hex() function in PHP converts a string to hexadecimal values. The conversion is done byte-wise with the high-nibble first. Note: It is not for converting strings representing binary digits into hexadecimal. Syntax:
bin2hex($string)
Parameters: This function accepts a single parameter $string. This is the string that will be converted to hexadecimal values. Return Value: The function returns the hexadecimal value of the string passed in the parameter. Examples:
Input : string = "geeks"
Output : 6765656b73

Input : string = "1111"
Output : 31313131 
Explanation: "1111" is converted to its hexadecimal 
values, it is not treated as a binary string, else the 
answer would have been F which is not in this case.
Below programs illustrate the bin2hex() function in PHP: Program 1:
<?php
// PHP program to demonstrate
// the bin2hex() function 
  
$str = "geeks";
  
echo bin2hex($str);
  
?>

                    
Output:
6765656b73
Program 2:
<?php
// PHP program to demonstrate 
// the bin2hex() function 
  
$str = "1111";
  
echo bin2hex($str);
  
?>

                    
Output:
31313131 
Reference: http://php.net/manual/en/function.bin2hex.php

Last Updated : 21 Jun, 2023
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