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List:       php-general
Subject:    Re: [PHP] what is the main difference between fread() and readfile()?
From:       Negin Nickparsa <nickparsa () gmail ! com>
Date:       2014-08-11 0:56:24
Message-ID: CAJGV41eMYYMn4esahZs3fawVn4QXMdxW67S9HLt+WvHRSmtrow () mail ! gmail ! com
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Thank you Aziz


Sincerely
Negin Nickparsa


On Sun, Aug 10, 2014 at 5:21 PM, Aziz Saleh <azizsaleh@gmail.com> wrote:

>
>
>
> On Sun, Aug 10, 2014 at 6:59 PM, Negin Nickparsa <nickparsa@gmail.com>
> wrote:
>
>>
>>
>>
>> Sincerely
>> Negin Nickparsa
>>
>>
>> On Sun, Aug 10, 2014 at 3:57 PM, Aziz Saleh <azizsaleh@gmail.com> wrote:
>>
>>>
>>>
>>>
>>> On Sun, Aug 10, 2014 at 6:31 PM, Negin Nickparsa <nickparsa@gmail.com>
>>> wrote:
>>>
>>>> fread
>>>> (PHP 4, PHP 5)
>>>>
>>>> fread — Binary-safe file read
>>>> Description  ¶
>>>> <
>>>> http://us1.php.net/manual/en/function.fread.php#refsect1-function.fread-description
>>>> >
>>>>
>>>> string fread ( resource $handle , int $length )
>>>>
>>>> fread() reads up to length bytes from the file pointer referenced by
>>>> handle.
>>>> Reading stops as soon as one of the following conditions is met:
>>>> readfile
>>>>
>>>> (PHP 4, PHP 5)
>>>>
>>>> readfile — Outputs a file
>>>> Description  ¶
>>>> <
>>>> http://us3.php.net/manual/en/function.readfile.php#refsect1-function.readfile-description
>>>> >
>>>>
>>>> int readfile ( string $filename [, bool $use_include_path = false [,
>>>> resource $context ]] )
>>>>
>>>> Reads a file and writes it to the output buffer.
>>>>
>>>> in which condition it's better to use them? I confronted a question
>>>> that is
>>>> asking which of the following functions reads the entire contents of a
>>>> file?
>>>>
>>>> A.fgets
>>>>
>>>> B.file_get_contents
>>>>
>>>> C.fread()
>>>>
>>>> D.readfile()
>>>>
>>>> E.file()
>>>>
>>>> in my opinion the answer is B,C,D,E
>>>>
>>>> but the answer key is telling me the answer is B,D,E so fread for some
>>>> reason is not the answer and I cannot understand.
>>>>
>>>> *john coggshall and Marco Tabini  test book*
>>>>
>>>
>>> file_get_contents, file, and readfile all take the filename location as
>>> oppose to fgets/fread which require file pointers - requiring you to open
>>> the file first (via fopen for example).
>>>
>> ​so fread is reading the entire file?​
>>
>>
> No. fread reads a file pointer (not the file location). You can use
> fread/fgets to read the entire file content, but you need to open a file
> pointer first with fopen and know the size of the file with filesize.
>


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