In PHP, how to achieve the same purpose like StringTokenizer in Java? - php

Question

Say I have a String 030512 Jack 25 Male\n030513 David 23 Male\n030514 ..., how to extract the info from this String as a two dimensional table in PHP?
In Java, I can use StringTokenizer, like:
StringTokenizer lineTokenizer = new StringTokenizer("030512 Jack ...", "\n");
List<Student> students = new ArrayList<Student>();
while(lineTokenizer.hasMoreTokens()) {
String line = lineTokenizer.nextToken();
StringTokenizer itemTokenizer = new StringTokenizer(line, " ");
String id = itemTokenizer.nextToken();
String name = itemTokenizer.nextToken();
String age = itemTokenizer.nextToken();
String sext = itemTokenizer.nextToken();
students.add(new Student(id, name, age, sex));
}
Actually, my final goal is extracting this "table-like" info and store them into a Mysql database.
I am not familiar with PHP, could you show me how to do this in PHP, or what is a good practice to implement this two-dimensional data insertion into a Mysql database?

Answer 1

You can use the explode or split functions. E.g.
$records = explode("\n", $raw_data);
foreach($record in $records) {
$fields = explode(" ", $record);
$id = fields[0];
$name = fields[1];
///....
}

Answer 2

Not fancy but easier to understand in my opinion (requires that the string doesn't end with newline though, and that the information is always correctly formatted):
$students = array();
//no newline at the end, or you'll have to add a check for that in the loop.
$str = "030512 Jack 25 Male\n030513 David 23 Male";
foreach(explode("\n", $str) as $student_str) {
list($id, $name, $age, $sex) = explode(" ", $student_str);
array_push($students, array(":id"=>$id,":name"=>$name, ":age"=>$age, ":sex"=>$sex));
}
//For the DB part which has been quite absent.
$conn = new PDO("mysql:host=$dbhost;dbname=$dbname",$dbuser,$dbpass);
$query = "INSERT INTO students (id, name, age, sex) VALUES (:id, :name, :age, :sex)";
$prepared_query = $conn->prepare($query);
foreach($students as $student) {
$prepared_query->execute($student);
}
You could of course execute the queries in the first loop instead if thats what you want.

Answer 3

You can use explode() coupled with list():
foreach (explode("\n", $yourString) as $line) {
list($id, $name, $age, $sex) = explode(' ', $line);
// ...
}
Edit:
Updated the solution to correct a misunderstanding of the original data structure.

Answer 4

You could do like this
$string = "030512 Jack 25 Male\n030513 David 23 Male\n030514";
$array = array_map(function($v) {
return explode(' ', $v);
}, explode("\n", $string));