Today in the export of Excel, always to test the exported Excel file, frequent download and open, very troublesome to write a segment code one GO server export excel==> download Excel file to local ==> and open the operation. Here is the solution to download the remote file from PHP for forgetting. The 3rd approach takes into account performance issues when the file is too large. 3 options:-rw-rw-r--1 Liuyuan liuyuan 470 Feb 18:12 test1_fopen.php-rw-rw-r--1 Liuyuan liuyuan 541 Feb 18:06 test2_cur l.php-rw-rw-r--1 Liuyuan Liuyuan 547 Feb 18:12 test3_curl_better.php Scenario 1, for small files directly using fopen ()/file_get_contents () Get the file stream and write it with file_put_contents () Scenario 2: Get content through curl 1th, there is a problem with 2 scenarios, that is, before writing to the local disk, the file is read into memory, then when the file is large, it may crash out of memory, even if your memory settings are large enough, then this is not a cost The workaround is to give curl a writable file stream to solve this problem by itself (via the curlopt_file option) so that a file pointer is created first.
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