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v. ???(??, ??? ??? ?)

n. ???, ???

3?? ??: ??? ???: ??? ??? : rewind ????: rewind

PHP ???() ?? ???

??: ?? ???? ??? ????? ?? ???? ?????.

??: ??rewind(??)

????:

??: ???? true? ?????. ???? false? ?????.

PHP ???() ?? ?

<?php
$file = fopen("./test.txt","r");
//改變文件指針的位置
fseek($file,"13");
//把文件指針設(shè)定為 0
rewind($file);
//輸出指針位置
echo ftell($file);
?>