php只下载第一个1mb的文件

Question

I'm using file_get_contents to get a remote file. My question is, is it possible to ask php to downlaod the first 1mb of a file rather than the whole file? Thank you!

Answer 1

According to my knowledge you can not specify the number of MBs but you can do something like below.

<?php
// Read 14 characters starting from the 21st character
$section = file_get_contents('./people.txt', NULL, NULL, 20, 14);
var_dump($section);
?>

Read Docs

string file_get_contents ( string $filename [, bool $use_include_path
= false [, resource $context [, int $offset = -1 [, int $maxlen ]]]] )

maxlen - Maximum length of data read. The default is to read until end of file is reached. Note that this parameter is applied to the stream processed by the filters.