Why we use bin2hex() Function in PHP

The bin2hex() function is used to converts a string to hexadecimal. This conversion is performed byte-wise and with the high-nibble first.

Note: It is not for converting strings representing binary digits into hexadecimal.

Syntax:

bin2hex($my_string)

What are the Parameters?

The bin2hex($my_string) function accepts a single parameter $my_string. This is the string that will be converted to hexadecimal values.

What are Return Values?

The bin2hex($my_string) function returns the hexadecimal value of the string passed in the parameter.

Examples:

Input : string = ” t4tutorials”
Output : 74347475746f7269616c73
Input : string = ” 444″
Output : 343434

Let’s see some PHP programs that illustrate the bin2hex() function.

Example 1: PHP bin2hex() function

<?php 
// PHP program to demonstrate 
// the bin2hex() fucntion   
$str = "t4tutorials";  
echo bin2hex($str);  
?>

<?php

// PHP program to demonstrate

// the bin2hex() fucntion

$str =

"t4tutorials";

echo bin2hex($str);

Output

74347475746f7269616c73

<?php 
// PHP program to demonstrate  
// the bin2hex() fucntion  
$str = "444"; 
echo bin2hex($str);  
?>

<?php

// PHP program to demonstrate

// the bin2hex() fucntion

$str = "444";

echo bin2hex($str);

Output

343434

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