PHP failed to load string from other function as parameter - php

Question

public function test_passing_string() {
$this - > load - > model(array('registration/Registration_model', 'Jawaban_lab_model'));
$registration = new Registration_model();
$jawaban_lab = new Jawaban_lab_model();
$id = "kuda4";
$jawaban_lab - > load($id); //load jawaban_lab from id
$manualy_written_registration_number = "REG/FM/130102-0001";
echo "registration number from jawaban_lab->registration_number : ".$jawaban_lab - > registration_number
.
"<br> registration number from manualy_written_registration_number : ".$manualy_written_registration_number;
//$registration->load($jawaban_lab->registration_number);
$registration - > load($manualy_written_registration_number);
echo "<br> patient id : ".json_encode($registration - > PatientID);
}
Before go to the question, I will explain my code.
On test_passing_string() function, I call 2 model, and create object for each model there are $registration and $jawaban_lab.
To load data from model I create a load() function. load() has two parameters: column_value and column_name. The default value for column_name is that model's Primary Key.
BUT
The problem comes from
$registration->load($jawaban_lab->registration_number);
I can't retrieve any $registration object data, then I test it by passing the value manually by write this:
$manualy_written_registration_number = "REG/FM/130102-0001";
$registration - > load($manualy_written_registration_number);
And the result appear, doesn't that mean my load() function is fine?
Then I check value inside $jawaban_lab->registration_number by echoing it, surprisingly it display same value as my $manualy_written_registration_number variable.
This is screenshoot in my browser when I run test_passing_string() function:
Using $manualy_written_registration_number value
Using $jawaban_lab->registration_number value
Why can't I use the value from
$jawaban_lab->registration_number even though it has the same value as
my manually writen registraiton number?
public function load($column_value, $column_name = NULL) {
$query = NULL;
if ($column_name != NULL) {
// using custom column.
$query = $this->dbs->get_where($this::DB_TABLE, array(
$column_name => $column_value
));
} else {
// using column primary key .
$query = $this->dbs->get_where($this::DB_TABLE, array(
$this::DB_TABLE_PK => $column_value
));
}
if ($query->row()) {
$this->populate($query->row());
}
}
I use multiple database using CodeIgniter 3, registration_model from SQL server and jawaban_lab from MySQL, jawaban lab have column registration_number to store registration_model primary key
var_dump

Answer 1

First of all thanks to rlanvin and Nirajan N Raju
from rlanvin's comment, i find out the problem is come from codeigniter's query helper, because when i enable codeigniter profiling sql server query return "SELECT CASE WHEN (##OPTIONS | 256) = ##OPTIONS THEN 1 ELSE 0 END AS qi"
so i think codeigniter might be cannot generate query so i create the query manually
i change
public function load($column_value, $column_name = NULL) {
$query = NULL;
if ($column_name != NULL) {
// using custom column.
$query = $this->dbs->get_where($this::DB_TABLE, array(
$column_name => $column_value
));
} else {
// using column primary key .
$query = $this->dbs->get_where($this::DB_TABLE, array(
$this::DB_TABLE_PK => $column_value
));
}
if ($query->row()) {
$this->populate($query->row());
}
}
to this
public function load($column_value, $column_name = NULL) {
$query = NULL;
if ($column_name != NULL) {
$query = $this->dbs->query("SELECT * FROM " . $this::DB_TABLE . " WHERE " . $column_name . " LIKE '" . trim($column_value) . "'");
} else {
$query = $this->dbs->query("SELECT * FROM " . $this::DB_TABLE . " WHERE " . $this::DB_TABLE_PK . " LIKE '" . trim($column_value) . "'");
}
if ($query->row()) {
$this->populate($query->row());
}
}