Maps a function through the lines of a file, line by line
Install it with composer require mattmezza/line-map
Use it like this:
$map = Map\CSV::fileNamed("example.csv");
$rows = $map->with(function ($row, $idx) {
return array_merge([$idx + 1], $row);
})->get();
$header = $map->getHeader();
or
Map\Txt::fileNamed("lines.txt")->with(function ($line, $idx) {
echo "$idx: $line";
});
// the callback function - can be also an anonymous closure
$doStuff = function($line, $lineNumber) {
return $lineNumber . ": " . $line;
};
// from a string variable
$text = "line 1
line2
line3";
$newLines = Map\Txt::string($text)->with($doStuff)->toArray();
// from a filename
$filename = "./somelines.txt";
$newLines = Map\Txt::fileNamed($filename)->with($doStuff)->toArray();
// from a file resource handle
$file = fopen($filename, "r");
$newLines = Map\Txt::file($file)->with($doStuff)->toArray();
// the callback function - can be also an anonymous closure
$doStuff = function($row, $lineNumber, $headers) {
echo $row[$headers[0]];
return $row;
};
// from a string variable
$csv = "name,surname
John,Doe
Foo,Bar";
$newRows = Map\CSV::string($csv)->with($doStuff)->toArray();
// from a filename
$filename = "./somedata.csv";
$newRows = Map\CSV::fileNamed($filename)->with($doStuff)->toArray();
// from a file resource handle
$file = fopen($filename, "r");
$newRows = Map\CSV::file($file)->with($doStuff)->toArray();
Rapidly cycle through this CSV
name,username,email
Matt,mattmezza,mattmezza@gmail.com
for each line generate custom message replacing values using the following template
Hello {{name}},
your username is {{username}}.
send each message to the right user and collect some logs
$tpl = "Hello __name__,
your username is __username__.";
$logs = Map\CSV::fileNamed("file.csv")->with(function($row, $idx, $headers) use ($tpl) {
$msg = $tpl;
foreach ($headers as $header) {
$msg = str_replace("{{".$header."}}", $row[$header], $msg);
}
return sendMail($row["email"]);
})->toArray();