file_get_contents是否会正常失败? [英] Will file_get_contents fail gracefully?

问题描述

我需要 file_get_contents 才能容错，例如，如果馈给它的$url返回 404 ，请在回显警告之前告诉我有关它的信息.能做到吗?

I need file_get_contents to be fault tolerant, as in, if the $url fed to it returns a 404, to tell me about it before it echos out a warning. Can this be done?

推荐答案

任何使用HTTP包装器访问远程文件的函数，就好像它是本地的一样，都会自动生成一个名为

Any function that uses the HTTP wrapper to access a remote file as if it were local will automatically generate a local variable named $http_response_header in the local scope. You can access that variable to find information about what happened in a call to fopen, file_get_contents ... on a remote file.

您可以使用@:@file_get_contents禁止显示警告.

You can suppress the warning using @: @file_get_contents.

如果您不关心错误是什么，可以使用@file_get_contents并将结果与​​false进行比较:

If you don't care about what the error was, you can use @file_get_contents and compare the result to false:

$content = @file_get_contents(url);
if ($content === false) { /* failure */ } else { /* success */ }

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