Creating new files from an old one - php

Question

while (($line = fgets($handle)) !== false) {
//look for the first payor block
if(strpos($line, 'N1*PR*') !== false || $block_start) {
$header_end = true; $block_start = true;
//see if the block finished
if(strpos($line, 'CAS*CO*45*20.43**253*1.27~') !== false) {
$block_start = false;
$payor_blocks[$count] .= $line;
$count++;
}
$payor_blocks[$count] .= $line;
} else {
//append to the header
if($header_end) {
$footer .= $line."\n";
} else {
$header .= $line."\n";
}
}
}
//get payor blocks and create a file foreach payor
$new_files = array();
foreach($payor_blocks as $block) {
$filename = $file . "_" . $count;
$count++;
$new_files[] = array(
'name' => $filename,
'content' => $header."\n".$block."\n".$footer
);
//loop through new files and create them
foreach($new_files as $new_file) {
$myfile = fopen($file, "x");
fwrite($myfile, $new_file['content']);
//close the file
fclose($myfile);
I have the code above, it's suppose to be able to open an original file called "$file" and create a new file then close it, However its not creating and when I run it, i get this warning error:
Warning: fopen(362931550.1a): failed to open stream:
File exists in /script2.php on line 90 Warning:
fwrite() expects parameter 1 to be resource,
boolean given in /script2.php on line 94 Warning:
fclose() expects parameter 1 to be resource, boolean
given in /script2.php on line 96
Any help is kindly appreciated.
I have one file named: 362931550.1a
I did a code that splits them at certain areas, (its pretty long to post), when i run the script I see it on my browser but it doesn't create 2 new files in the folder.

Answer 1

Your file open mode is incorrect.
From php.net documentation:
'x' Create and open for writing only; place the file pointer at the beginning of the file. If the file already exists, the fopen() call will fail by returning FALSE and generating an error of level E_WARNING [...]
You should probably use 'w' mode:
'w' Open for writing only; place the file pointer at the beginning of the file and truncate the file to zero length. If the file does not exist, attempt to create it.

Answer 2

The script failed to open a stream with the fopen() function and return a boolean. The function fwrite() become the boolean value but need a resource.
The reason is that you only create files with the x-modifier in the stream.
Create and open for writing only; place the file pointer at the beginning of the file. If the file already exists, the fopen() call will fail by returning FALSE and generating an error of level E_WARNING. If the file does not exist, attempt to create it.
You see in the PHP manual more informations about the stream-modes (PHP manual).
To prevent this message check if the value isn't false.
$stream = fopen("file.txt", "x");
if($stream === false) {
echo "Error while open stream";
}
//here your code