All PHP inbuild functions

Is there a list available for download with all php5 inbuilt functions?

Not looking for one specific function, I need all available PHP command in a txt file line by line.

 

<?php

if (!$fp = @fopen('functions.txt', 'a'))
{
    exit('Unable to open file');
}

foreach (get_defined_functions()['internal'] AS $name)
{
    fwrite($fp, "{$name}\n");
}

fclose($fp);

PHP:

Note: This will write all available functions on your machine to the file. Including those from extensions you may have installed.

 

What's wrong with php.net?

 

php.net is the best to see all the functions with details and examples as well..

 

The OP asked for a text file containing all available functions, one per line. Not sure how php.net helps here.