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pack()

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<?php
$string = pack (
    , // string $format
    , // mixed $args1
    , // mixed $args2
    , // mixed $args3
    , // mixed $args4
      // [mixed $args]
);

// shows the result in hexadecimal
$hex = bin2hex($string);
?>
Result
$string = '4xVAB'
$hex = '123478564142'
Examples
#1 pack  ("nvc*",
 0x1234,
 0x5678,
 65,
 66)
See also
bin2hex, unpack
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