(PHP 5 >= 5.3.0, PHP 7)
hash_copy — 锟斤拷锟斤拷锟斤拷希锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
$context
) : HashContext锟斤拷锟截癸拷希锟斤拷锟斤拷锟斤拷锟斤拷锟侥碉拷一锟斤拷锟斤拷锟斤拷锟斤拷
| 锟芥本 | 说锟斤拷 |
|---|---|
| 7.2.0 | 锟斤拷锟杰的诧拷锟斤拷锟皆硷拷锟斤拷锟斤拷值锟斤拷锟斤拷源锟斤拷锟斤拷锟睫革拷为 HashContext 锟斤拷锟斤拷锟斤拷锟酵★拷 |
Example #1 hash_copy() 锟斤拷锟斤拷
<?php
$context = hash_init("md5");
hash_update($context, "data");
/* 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷源锟皆憋拷锟斤拷锟绞癸拷锟� */
$copy_context = hash_copy($context);
echo hash_final($context), "\n";
hash_update($copy_context, "data");
echo hash_final($copy_context), "\n";
?>
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