Replacement in the php array - php

Question

i want to replace
[children] => Array
(
)
from my php array...i tried with
$array=str_replace('[children] => Array
(
)',' ',$nestedArray);
print_r($array);
but nothing happened in the array..how should i replace the empty children from php array..
my php output
Array
(
[0] => Array
(
[id] => 44
[name] => அகடம்
[parent] =>
[color] => red
[children] => Array
(
[0] => Array
(
[id] => 45
[name] => மோசடி
[parent] => 44
[color] => red
[children] => Array
(
)
)
[1] => Array
(
[id] => 46
[name] => சூழ்ச்சி
[parent] => 44
[color] => red
[children] => Array
(
)
)
[2] => Array
(
[id] => 47
[name] => அநீதி
[parent] => 44
[color] => red
[children] => Array
(
)
)
[3] => Array
(
[id] => 48
[name] => பொல்லாங்கு
[parent] => 44
[color] => red
[children] => Array
(
)
)
)
)
)
complete php code
<?php
$con=mysqli_connect("localhost","root","pass","data");
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$name=$_GET['editor'];
$sql="SELECT * FROM phptab where value LIKE '%".$name."%'";
$r = mysqli_query($con,$sql);
$data = array();
while($row = mysqli_fetch_assoc($r)) {
$data[] = $row;
}
function buildtree($src_arr, $parent_id = 0, $tree = array())
{
foreach($src_arr as $idx => $row)
{
if($row['parent'] == $parent_id)
{
foreach($row as $k => $v)
$tree[$row['id']][$k] = $v;
unset($src_arr[$idx]);
$tree[$row['id']]['children'] = buildtree($src_arr, $row['id']);
}
}
ksort($tree);
return $tree;
}
function insertIntoNestedArray(&$array, $searchItem){
if($searchItem['parent'] == 0){
array_push($array, $searchItem);
return;
}
if(empty($array)){ return; }
array_walk($array, function(&$item, $key, $searchItem){
if($item['id'] == $searchItem['parent']){
array_push($item['children'], $searchItem);
return;
}
insertIntoNestedArray($item['children'], $searchItem);
}, $searchItem);
}
$nestedArray = array();
foreach($data as $itemData){
//$nestedArrayItem['value'] = $itemData['value'];
$nestedArrayItem['id'] = $itemData['id'];
$nestedArrayItem['name'] = $itemData['name'];
$nestedArrayItem['parent'] = $itemData['parent'];
$nestedArrayItem['tooltip'] = $itemData['tooltip'];
$nestedArrayItem['color'] = $itemData['color'];
$nestedArrayItem['level'] = $itemData['level'];
$nestedArrayItem['children'] = array();
//$data[]=$dat;
insertIntoNestedArray($nestedArray, $nestedArrayItem);
}
header('Content-Type: application/json');
print_r( $nestedArray);
?>
expected output
Array
(
[0] => Array
(
[id] => 44
[name] => அகடம்
[parent] =>
[color] => red
[children] => Array
(
[0] => Array
(
[id] => 45
[name] => மோசடி
[parent] => 44
[color] => red
)
[1] => Array
(
[id] => 46
[name] => சூழ்ச்சி
[parent] => 44
[color] => red
)
[2] => Array
(
[id] => 47
[name] => அநீதி
[parent] => 44
[color] => red
)
[3] => Array
(
[id] => 48
[name] => பொல்லாங்கு
[parent] => 44
[color] => red
)
)
)
)
PASTBIN FOR DETAILS - http://pastebin.com/mqyfbdsq
UPDATED CODE BASED ON SUGGESTION - http://pastebin.com/mAkZ4q12
updated php
<?php
$con=mysqli_connect("localhost","root","admin321","data");
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$name=$_GET['editor'];
$sql="SELECT * FROM phptab where value LIKE '%".$name."%'";
$i=-1;
$r = mysqli_query($con,$sql);
$data = array();
while($row = mysqli_fetch_assoc($r)) {
if($row['parent']==""){
++$i;
}
foreach($row as $k=>$v){
if($row['parent']==""){
$tree[$i][$k]=$v;
}else{
$tree[$i]['children'][$k]=$v;
}
$data[] = $row;
}
}
function buildtree($src_arr, $parent_id = 0, $tree = array())
{
foreach($src_arr as $idx => $row)
{
if($row['parent'] == $parent_id)
{
foreach($row as $k => $v)
$tree[$row['id']][$k] = $v;
unset($src_arr[$idx]);
$tree[$row['id']]['children'] =
buildtree($src_arr, $row['id']);
}
}
ksort($tree);
return $tree;
}
function insertIntoNestedArray(&$array, $searchItem){
if($searchItem['parent'] == 0){
array_push($array, $searchItem);
return;
}
if(empty($array)){ return; }
array_walk($array, function(&$item, $key, $searchItem){
if($item['id'] == $searchItem['parent']){
array_push($item['children'], $searchItem);
return;
}
insertIntoNestedArray($item['children'], $searchItem);
}, $searchItem);
}
$nestedArray = array();
foreach($data as $itemData){
//$nestedArrayItem['value'] = $itemData['value'];
$nestedArrayItem['id'] = $itemData['id'];
$nestedArrayItem['name'] = $itemData['name'];
$nestedArrayItem['parent'] = $itemData['parent'];
$nestedArrayItem['tooltip'] = $itemData['tooltip'];
$nestedArrayItem['color'] = $itemData['color'];
$nestedArrayItem['level'] = $itemData['level'];
$nestedArrayItem['children'] = array();
//$data[]=$dat;
insertIntoNestedArray($nestedArray, $nestedArrayItem);
}
header('Content-Type: application/json');
$json= json_encode($nestedArray,JSON_UNESCAPED_UNICODE);
echo $json = substr($json, 1, -1);
?>
FINALLY FOUND THE SOLUTION
<?php
$con=mysqli_connect("localhost","root","pass","data");
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$name=$_GET['input'];
$sql="SELECT * FROM phptab where value LIKE '%".$name."%'";
$r = mysqli_query($con,$sql);
$data = array();
while($row = mysqli_fetch_assoc($r)) {
$data[] = $row;
}
function buildtree($src_arr, $parent_id = 0, $tree = array())
{
foreach($src_arr as $idx => $row)
{
if($row['parent'] == $parent_id)
{
foreach($row as $k => $v)
$tree[$row['id']][$k] = $v;
unset($src_arr[$idx]);
$tree[$row['id']]['children'] = buildtree($src_arr, $row['id']);
}
}
ksort($tree);
return $tree;
}
function insertIntoNestedArray(&$array, $searchItem){
if($searchItem['parent'] == 0){
array_push($array, $searchItem);
return;
}
if(empty($array)){ return; }
array_walk($array, function(&$item, $key, $searchItem){
if($item['id'] == $searchItem['parent']){
array_push($item['children'], $searchItem);
return;
}
insertIntoNestedArray($item['children'], $searchItem);
}, $searchItem);
}
$nestedArray = array();
function array_remove_empty($haystack)
{
foreach ($haystack as $key => $value) {
if (is_array($value)) {
$haystack[$key] = array_remove_empty($haystack[$key]);
}
if (empty($haystack[$key])) {
unset($haystack[$key]);
}
}
return $haystack;
}
foreach($data as $itemData){
$nestedArrayItem['id'] = $itemData['id'];
$nestedArrayItem['name'] = $itemData['name'];
$nestedArrayItem['parent'] = $itemData['parent'];
$nestedArrayItem['tooltip'] = $itemData['tooltip'];
$nestedArrayItem['color'] = $itemData['color'];
$nestedArrayItem['level'] = $itemData['level'];
$nestedArrayItem['children'] = array();
insertIntoNestedArray($nestedArray, $nestedArrayItem);
}
header('Content-Type: application/json');
$jj=(array_remove_empty($nestedArray));
$json=json_encode($jj,JSON_UNESCAPED_UNICODE);
echo $json;
?>

Answer 1

Thank you for editing your question.
The best course of action is to avoid multiple loops over the same array just to add/remove elements. D.R.Y. - Don't Repeat Yourself
If you don't want to have certain elements in your array, don't ever put them in.
If you want a specific array structure, build it appropriately, one time.
I haven't tested this, but it should provide you with the desired array structure and values while using just one loop. If not, please edit your question to explain, send me a comment, and I'll assist further.
$name=$_GET['editor'];
// $_GET must be validated/santized before used in query...
$sql="SELECT * FROM phptab where value LIKE '%".$name."%' ORDER BY `parent`,`id`";
$r=mysqli_query($con,$sql);
$i=-1;
$j=-1;
while($row=mysqli_fetch_assoc($r)){
if($row['parent']=="0"){
++$i; // if a parent row, increment its numeric key
}else{
++$j; // if a child row, increment its numeric key
}
foreach($row as $k=>$v){
if($row['parent']=="0"){
// parent row data goes in outer array
$tree[$i][$k]=$v;
}else{
// child row parent's children (inner) array with its numeric key
$tree[$i]['children'][$j][$k]=$v;
}
}
}
header('Content-Type: application/json');
$json=json_encode($tree,JSON_UNESCAPED_UNICODE);
echo $json=substr($json,1,-1);