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如何检测file_get_content错误

WBOY
WBOYOriginal
2016-06-06 20:13:211633browse

请问,如何检测file_get_content错误,判断错误,提示错误。

回复内容:

请问,如何检测file_get_content错误,判断错误,提示错误。

<code>try {
    file_get_contents('file_path or url');
}
catch (Exception $e) {
    print_r($e);
}</code>

和 file() 一样,只除了 file_get_contents() 把文件读入一个字符串。将在参数 offset 所指定的位置开始读取长度为 maxlen 的内容。如果失败,file_get_contents() 将返回 FALSE。

<code>if(file_get_contents('./text.txt') === false)
{
    echo '读取失败';
}
else
{
    echo '读取成功';
}</code>

<code>set_error_handler(function($s,$m,$f,$l){
    
    
$msg=sprintf("\nFile: %s\nLine: %d\nError: %s",$f,$l,$m);
//throw new ErrorException();
 $e = new Exception ();
    $e->msg=$msg;
    throw $e;
    
});


$url='http://www.google.com';

try {
    echo file_get_contents($url);
}
catch (Exception $e) {
    print_r($e->msg);
}</code>
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