Question

How to convert string to byte array in PHP

Answer 1

$string = "PHP Programming";

$byteArray = unpack('C*', $string);

print_r($byteArray);


/*
run:

Array
(
    [1] => 80
    [2] => 72
    [3] => 80
    [4] => 32
    [5] => 80
    [6] => 114
    [7] => 111
    [8] => 103
    [9] => 114
    [10] => 97
    [11] => 109
    [12] => 109
    [13] => 105
    [14] => 110
    [15] => 103
)

*/

 

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Answer 2

$string = "PHP Programming";

$byteArray = array_map('ord', str_split($string));

print_r($byteArray);


/*
run:

Array
(
    [1] => 80
    [2] => 72
    [3] => 80
    [4] => 32
    [5] => 80
    [6] => 114
    [7] => 111
    [8] => 103
    [9] => 114
    [10] => 97
    [11] => 109
    [12] => 109
    [13] => 105
    [14] => 110
    [15] => 103
)

*/

 

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Answer 3

$string = "PHP Programming";

$byteArray = unpack('C*', mb_convert_encoding($string, 'ISO-8859-1', 'UTF-8'));

print_r($byteArray);


/*
run:

Array
(
    [1] => 80
    [2] => 72
    [3] => 80
    [4] => 32
    [5] => 80
    [6] => 114
    [7] => 111
    [8] => 103
    [9] => 114
    [10] => 97
    [11] => 109
    [12] => 109
    [13] => 105
    [14] => 110
    [15] => 103
)

*/

 

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