PHP将数组传递给pack()函数 [英] PHP Passing an array to pack() function

问题描述

pack()语法是(来自 http://php.net/manual/zh/function.pack.php )

string pack ( string $format [, mixed $args [, mixed $... ]] )

所以假设我需要打包三个字节

so assuming I need to pack three bytes

$packed = pack( "c*", 65, 66, 67 );

但是如果我必须打包任意数量的字节怎么办?

But what if I have to pack an arbitrary number of bytes?

可以方便地将它们存储到数组中，所以我天真地尝试过

They could coveniently be stored into an array so I naively tried

$a = array( 65, 66, 67 );
$packed = pack( "c*", $a );

但这是行不通的.

有没有办法使pack()与数组一起工作?

Is there a way to make pack() work with an array ?

推荐答案

晚了一点，但是为了将来参考，您可以使用新的...运算符(v5.6 +)来内联分解数组:

At little late to the party, but for future reference, you can use the new ... operator (v5.6+) to explode the array inline:

$packed = pack("c*", ...$a);

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