PHP:What Is Php File

What Is Php File

PHP:What Is Php File :

Files :

1.      Fopen() : this function is used to open files in php.

2.       

Fopen(string , string);

When the first string argument is name of the file and second string argument is mode of operation.

The mode operations can be either of the following.

r  readonly . starts at the begining of the file.

r +  read/write.

w  write only . opens and clears the contents of file or creates a new file if it doesnot exist.

w+  read/write.

a  append . opens and writes to the end of the file or creates a new file if it doesnot exist.

a+ read/append.  Presents file content by writing to the end of the file.

x write only. Creates a new file returns FALSE and an error if file already exists.

x+ read/write. Creates a new file . returns false and an error if file already exists.

This function returns a resource of type stream on success and false on failure.

3.      Fclose(file resource) :

                                      This function is used to close and open file.

4.      Feof(file resource):

                                      This function checks if the “end-of-file”(EOF) has been reached. This function return a boolean value. If end-of-file is reached this function returns true otherwise false.

 You cannot read from files opened in w,a and x mode.

5.      Fgets(file resource):

                                      This function is used to read a single line from a file.

6.      Fgetc(file resource):

                                             The function is used to read a single character from a file.

Program to create a file with name india.txt in your application folder.

<?php

//$fp = fopen("india.txt","x");

$fp = fopen("india.txt","w");

var_dump($fp);

if($fp)

{

    echo "file create!!!";

    fclose($fp);

   

}

else

    echo "file is not created!!!";

?>

OutPut:

resource(3) of type (stream) file create!!!

Program to read the data from file line by line or character by character?

<?php

echo "<h1>";

$fp =fopen("india.txt","r") or exit("unable to open file!!!");

while(!feof($fp))

{

    //$str = fgets($fp);

    $str = fgetc($fp);

    echo $str."<br>";

    }

fclose($fp);

?>

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