Question

How to read and write to a text file in PHP

Answer 1

// Print the file 
$f = fopen("e:/datefile.txt", "r") or die("Error open file!");
while(!feof($f)) 
    echo fgets($f) . "<br />";
fclose($f);

echo "1 ------ <br />";

// Read and Write
$f = fopen("e:/datefile.txt", "r+") or die("Error open file!");
echo fgets($f) . "<br />"; // Read the first line. File pointer point on second line.
fwrite($f, "a text line"); // Write - Overwrite the second line.
fclose($f);

echo "2 ------ <br />";

// Print the file again
$f = fopen("e:/datefile.txt", "r") or die("Error open file!");
while(!feof($f)) 
    echo fgets($f) . "<br />";
fclose($f)

/*
run:

PHP 
Programming 
For Web Applications 
Is Popular
1 ------ 
PHP 
2 ------ 
PHP 
a text line 
For Web Applications 
Is Popular

*/

 

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