How Can I Generate a Hex Dump of a String in PHP?

Displaying a Hex Dump of a String in PHP

In PHP, you may encounter scenarios where you need to obtain a hex dump of a string. This representation provides a detailed view of each byte within the string, expressed in hexadecimal format. Here are some methods to achieve this:

Using bin2hex:

The bin2hex function converts binary data to its hexadecimal representation. You can use it to convert a string, which is an array of characters, directly to a hex dump:

echo bin2hex($string);

Using ord and String Concatenation:

Alternatively, you can use a loop and the ord function to obtain the hexadecimal value of each character and concatenate it to a string:

for ($i = 0; $i < strlen($string); $i++) {
    echo str_pad(dechex(ord($string[$i])), 2, '0', STR_PAD_LEFT);
}

In both cases, $string is the variable containing the string for which you want to generate the hex dump.

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