Saving result to text file - php

Question

I've searched around this site for an answer but couldn't find any help in my problem.
I have a script with a form and I'd like to get the contents of the input written into a txt file (line by line in mytext.txt file for example) when the submit button is pressed - or maybe simpler only the result.
Result / content of "echo $result['text'];" should be saved to text file (mytext.txt)
I tried to add something like that after each "echo" but it doesn't work. here is the sample code.
$f = fopen("mytext.txt", "w");
fwrite($f, $result);
fclose($f);
or
$f = fopen("mytext.txt", "w");
fwrite($f, $username);
fclose($f);
or
$txt = "$result";
$myfile = file_put_contents('mytext.txt', $txt.PHP_EOL , FILE_APPEND | LOCK_EX);
but still no luck.
How can I do that and where to add it? With PHP or maybe with JavaScript? Help please.
edit:
PART of the script (I'm sorry I forgot about it)
<?php
if(count($check_ex) == 2){
$ex_name = $check_ex[0]."_".$check_ex[1];
}else{
$ex_name = $check_ex[0];
}
$additional_button = "<a href='javascript:void(0)' onclick='submitform_$dom_$ex_name()' ><button id='buy' class='btn btn-success btn-xs pull-right order-btn'>".__($additional_button_name, 'kate')."</button></a>";
}elseif($integration == 'woocommerce'){
if($show_price){
$show_price = '- '.kate_display_price($username).__('/year','kate');
}
$additional_button = "<a href='?&add-to-cart=$additional_button_link&username=$username' id='buy' class='btn btn-success btn-xs pull-right order-btn' $buy_new_tab >".__($additional_button_name,'kate')." $show_price</a>";
}elseif($integration == 'custom'){
if(!$additional_button_name == '' AND !$additional_button_link == ''){
$additional_button_links = str_replace( '{username}', $username, $additional_button_link );
$additional_button = "<a id='buy' class='btn btn-success btn-xs pull-right order-btn' href='$additional_button_links' $buy_new_tab >".__($additional_button_name,'kate')."</a>";
}else{
$additional_button = '';
}
}else{
$additional_button = '';
}
$custom_not_found_result_text = str_replace( '{username}', $username, $custom_not_found_result_texts );
$whmcs = "<script type='text/javascript'>
function submitform_$dom_$ex_name()
{
document.whmcs_$dom_$ex_name.submit();
}
</script>
<form method='post' name='whmcs_$dom_$ex_name' id='whmcs' action='$additional_button_link/cart.php?a=add&username=register' $buy_new_tab>
<input type='hidden' name='usernames[]' value='$username' >
<input type='hidden' name='usernamesregperiod[$username]' value='1'>
</form>";
if ($available->status == 1) {
$result = array('status'=>1,
'username'=>$username,
'text'=> '<div class="callout callout-success alert-success clearfix available">
<div class="col-xs-10" style="padding-left:1px;text-align:left;">
<i class="glyphicon glyphicon-ok" style="margin-right:1px;"></i> '.__($custom_found_result_text,'kate').' </div>
<div class="col-xs-2" style="padding-right:1px">'.__($additional_button,'kate').' '.$whmcs.'</div>
</div>
');
echo $result['text'];
} elseif($available->status == 0) {
$result = array('status'=>0,
'username'=>$username,
'text'=> '<div class="callout callout-danger alert-danger clearfix not-available">
<div class="col-xs-10" style="padding-left:1px;text-align:left;">
<i class="glyphicon glyphicon-remove" style="margin-right:1px;"></i> '.__($custom_not_found_result_text, 'kate').'
</div>
<div class="col-xs-2" style="padding-right:1px">'.$www_link.'</div>
</div>
');
echo $result['text'];
}elseif ($available->status == 2) {
$result = array('status'=>2,
'username'=> $username,
'text'=> '<div class="callout callout-warning alert-warning clearfix notfound">
<div class="col-xs-10" style="padding-left:1px;text-align:left;">
<i class="glyphicon glyphicon-exclamation-sign" style="margin-right:1px;"></i> '.__('not found','kate').'
</div>
</div>
');
echo $result['text'];
}
}
}
else
{
echo 'Please enter the username';
}
}

Answer 1

If you are having errors when trying to get this code to run, check that you have granted your PHP file access to write information to the hard drive.

Answer 2

The code is correct, it may be that the directory does not have permission to create files.

Answer 3

You must check if the directory you're trying to save your txt file is writable.
Example:
$contents = 'Here goes your content';
$dirName = __DIR__; //in case you're saving in another directory, you may use 'files/directory/' instead of __DIR__
$fileName = $dirName.'/mytext.txt';
if (!is_writable($dirName)) {
throw new \Exception("This folder is not writable: '$dirName'");
}
//Checks if the content was added
if (!file_put_contents($fileName, $contents)) {
throw new \Exception("Could not write to file: $fileName");
}