strange array in php
- by tunpishuang
here i wrote a function , it's general purpose is to get an array of the depIds under the parent root $depId.
i use recursion method to get the array.
public function getEmpsByDep($depId){
$query = "select * from ".SQLPREFIX."department where id_parent=".$depId;
$stmt=$this->db->query($query);
while(($row=$this->db->fetch_assoc($stmt))==true)
{
if($this->hasChildNode($row['DEPID']))
{
$depId = $row['DEPID'];
self::getEmpsByDep($depId);
}
else
{
$arr[]=$row['DEPID'];
}
}
return ($arr);
}
while i think it should return a 1D array of the depid.but it return a strange 2D array like this:
array(4) {
[0]=>
string(2) "11"
[1]=>
string(2) "12"
[2]=>
string(2) "13"
[3]=>
string(2) "14"
}
array(3) {
[0]=>
string(2) "19"
[1]=>
string(2) "20"
[2]=>
string(2) "21"
}
array(3) {
[0]=>
string(2) "15"
[1]=>
string(2) "16"
[2]=>
string(2) "17"
}
array(8) {
[0]=>
string(1) "2"
[1]=>
string(1) "4"
[2]=>
string(1) "5"
[3]=>
string(1) "6"
[4]=>
string(1) "7"
[5]=>
string(1) "8"
[6]=>
string(1) "9"
[7]=>
string(2) "10"
}
here is the table structure and data sample:
$query[]="create table ".$sqltblpre."department(
depId number(10) not null primary key,
depName varchar2(50) not null,
id_parent number(10)
)";
//department(?????)
$index=1;
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'??',0)"; //1
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',0)"; //2
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',0)"; //3
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',0)"; //4
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',0)"; //5
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',0)"; //6
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'?????',0)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'????',0)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'????',0)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'????',0)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'??',1)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'??',1)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',1)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'??',1)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'??',3)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',3)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',3)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',3)"; //18
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'??',18)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'???',18)";
$query[] = "INSERT INTO ".$sqltblpre."department values(".$index++.",'??',18)";
so in a word, how can i get the 1D array thought the right code of this function?
