How does the fgets function in PHP work with the specified number parameter?

The fgets function in PHP reads a line from a file handle, and the specified number parameter indicates the maximum length of the line to read. If the line is longer than the specified number, fgets will read up to that number of characters and stop. To ensure that fgets reads the entire line regardless of its length, you can set the number parameter to a very high value or use a loop to read the line in chunks until the entire line is read. 

$handle = fopen("file.txt", "r");
$line = "";
while (!feof($handle)) {
    $line .= fgets($handle, 4096); // Read in chunks of 4096 characters
}
fclose($handle);
echo $line;

Keywords

PHP fgets function specified number parameter file reading input stream

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