How to save $_GET data to a file PHP - php

Question

I'm trying to save all key values from the GET parameters, but its not writing anything to the file.
foreach ($_GET as $key => $value) {
$contents = $key . " => " . $value . "<br>";
echo($contents);
file_put_contents("./test.log", $contents, FILE_APPEND);
}

Answer 1

Don't use file_put_contents() inside loop. Put it outside:-
$contents='';
foreach ($_GET as $key => $value) {
$contents .= $key . " => " . $value . "\n"; // or use `"\r\n"`
}
file_put_contents("./test.log", $contents, FILE_APPEND);
Note:- Check that file have write permission (644) + folder in which this file lies have the permission too (777) and path of the file is correct.
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Answer 2

print_r will give you the same output you are trying to build, and you can solve this using just one line.
file_put_contents("./test.log", print_r($_GET, true), FILE_APPEND);

Answer 3

AS i seen the save data in file is in every iteration an only at iteration current position:
$contents='';
foreach ($_GET as $key => $value) {
$contents.= $key . " => " . $value . "<br>";
}
file_put_contents("./test.log", $contents, FILE_APPEND);
Same path of php code?, not needed "./", could you try to open file, before and put here if there is no error.