How to convert string to binary in php

php steps to convert string (string) to binary: 1. Use bin2hex() function to convert the string to hexadecimal value, syntax "bin2hex(string)"; 2. Use base_convert() The function can convert a hexadecimal value into a binary value, the syntax is "base_convert(hexadecimal value, 16, 2)".

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, DELL G3 computer

php will string ( Method to convert string) to binary

#php converts string (string) to binary, you need to use hexadecimal.

Step 1: Use the bin2hex() function to convert string (string) to hexadecimal

bin2hex(string) The function converts ASCII Converts a string of characters to a hexadecimal value.

Return value: Returns the hexadecimal value of the string to be converted.

<?php
$str = bin2hex("Hello!");
echo "字符串对应的16进制值：".$str."<br>";
?>

Step 2: Use the base_convert() function to convert the hexadecimal value to a binary value

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

Just need to setbase_convert(hexadecimal System value, 16, 2) can convert the hexadecimal value to binary.

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);  
$str = bin2hex("Hello");
echo "字符串对应的16进制值：".$str."<br>";
echo "字符串对应的2进制值：".base_convert($str, 16, 2);
?>

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