PHP“file_put_contents”不会附加到文件

Question

I'm having a bit of trouble here. I've created a form that takes data from a text field and (is supposed to) write the data to the end of a .txt file.

However, using file_put_contents simply overwrites whatever was in the file beforehand with the submitted data. I'm not sure why this is happening, as I've used this before without fail.

PHP Code:

$line = "Name: " . $name . "---" . "Question: " . $question;
file_put_contents('questions.txt', $line . PHP_EOL, FILE_APPEND);

Answer 1

Maybe some another script is using your file too. Add LOCK_EX:

file_put_contents('questions.txt', $line.PHP_EOL , FILE_APPEND | LOCK_EX);

If it still doesn't work, use fopen and fwrite:

$myfile = fopen("questions.txt", "a");
fwrite($myfile, "
". $line);
fclose($myfile);