Working with huge text files in PHP?

Question

I need to scan through a 30MB text file - it's a list of world cities - How can I access this file, I feel like a File_Get_Contents will give my server a stroke

Answer 1

Just fopen it and then use fgets.

Answer 2

Filesystem functions come handy in this situation.

Example

$filename = "your_file_path";

// to open file
$fp = fopen($filename, 'r'); // use 'rw' to open file in read/write mode

// to output entire file
echo fread($fp, filesize($filename));

// to close file
fclose($fp);

---

References

(some handy functions)

• All Filesystem Functions
• fopen() - open file
• fread() - read file content
• fgets() - to get line
• fwrite() - write content to file
• fseek() - change file pointer's position
• rewind() - rewind file pointer to pos 0
• fclose() - close file
• ...

Answer 3

<?php
$fh = @fopen("inputfile.txt", "r");
if ($fh) {
    while (($line = fgets($fh)) !== false) {
        echo $line;
        // do something with $line..
    }
    fclose($fh);
}
?>

More information/examples on http://pt.php.net/manual/en/function.fgets.php