php怎么读取文件内容
php中读取文件内容的方法
fread
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fread() 从 handle 指向的文件中读取最多 length 个字节。该函数在读取完最多 length 个字节数,或到达 EOF 的时候,或(对于网络流)当一个包可用时,或(在打开用户空间流之后)已读取了 8192 个字节时就会停止读取文件,视乎先碰到哪种情况。
fread() 返回所读取的字符串,如果出错返回 FALSE。
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如果所要读取的文件不是本地普通文件,而是远程文件或者流文件,就不能用这种方法,因为,filesize不能获得这些文件的大小。此时,你需要通过feof()或者fread()的返回值判断是否已经读取到了文件的末尾。
例如:
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或者:
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