How to Close a File in PHP
<?php
//First, declare the file we wish to open.
$file = "test.txt";
//Now, we use the file_exists() function to confirm its existence.
if (file_exists ($file)){
//Then we attempt to open the file, in this case for reading.
try {
if ($readfile = fopen ($file, "r")){
//Then we can work with the file.
//Get the current value of our counter by using fread().
$curvalue = fread ($readfile,filesize($file));
//Close the file since we have no more need to read.
fclose ($readfile);
//Increment our counter by 1.
$curvalue++;
//Then attempt to open our file for writing, again validating.
if (is_writable ($file)){
try {
if ($writefile = fopen ($file, "w")){
//Then write the new value to the file.
fwrite ($writefile, $curvalue);
//Close the file as we have no more to write.
fclose ($writefile);
//Then lastly, output our counter.
echo $curvalue;
} else {
throw new exception ("Sorry, the file could not be opened");
}
} catch (exception $e){
echo $e->getmessage();
}
} else {
echo "File could not be opened for writing";
}
} else {
//If it fails, we throw an exception.
throw new exception ("Sorry, the file could not be opened.");
}
} catch (exception $e) {
echo $e->getmessage();
}
} else {
echo "File does not exist.";
}
?>