Convert NoSQL like syntax to MySQL syntax - php

Question

This is mysql table structure
item_id
StockNo
SizeCd
1
12003
UNIT
2
12007
JOGO
3
12008
PACOTE
4
12033
JOGO
5
12034
JOGO
6
12038
UNIT
I'm using plugin called DevExtreme for remote data grid. It's API request looks like below.
{
from: get_data
skip: 0
take: 50
requireTotalCount: true
filter: [["SizeCd","=","UNIT"],"or",["SizeCd","=","JOGO"]]
}
Where filter is what I need help with. What I want is I want to convert this string into MySQL where condition syntax.
I tried using php functions like array_merge join but couldn't get it to work. Sometimes it place quotes to both sides or sometimes quotes were missing. It should be like field name without quotes and value with quotes. Like in mysql where syntax.
Sorry for bad formatting and grammar mistakes.

Answer 1

For this array:
$array = [["SizeCd","=","UNIT"],"or",["SizeCd","=","JOGO"],"or",["SizeCd","=","PACOTE"]];
For PDO
You can use the following functions:
function arrayToQuery(string $tableName, array $array) : string
{
$select = "SELECT * FROM `{$tableName}` WHERE ";
foreach($array as $item) {
if(is_array($item)) {
$select .= "`{$item[0]}` {$item[1]} ?";
} else {
$select .= " {$item} ";
}
}
return $select;
}
function arrayToParams(array $array) : array
{
$return = [];
foreach($array as $item) {
if(is_array($item)) {
$return[] = $item[2];
}
}
return $return;
}
var_dump(
arrayToQuery("x", $array),
arrayToParams($array)
);
Output:
string(66) "SELECT * FROM `x` WHERE `SizeCd` = ? or `SizeCd` = ? or `SizeCd` = ?"
array(3) {
[0]=>
string(4) "UNIT"
[1]=>
string(4) "JOGO"
[2]=>
string(6) "PACOTE"
}
Example using PDO
$conn = /* your conn object */;
$sql = arrayToQuery("your_table_name", $array);
$stmt = $conn->prepare($sql);
$stmt->execute(arrayToParams($array));
Update: For Mysqli
For mysqli you can use the following function:
function arrayToQueryMysqli($mysqli, string $table, array $array) : string
{
$select = "SELECT * FROM `{$table}` WHERE ";
foreach($array as $item) {
if(is_array($item)) {
$select .= "`{$item[0]}` {$item[1]} '" . $mysqli->real_escape_string($item[2]) . "'";
} else {
$select .= " {$item} ";
}
}
return $select;
}
$mysqli = new mysqli(/* Your settings */);
$query = arrayToQueryMysqli($mysqli, "tablename", $array);
$result = $mysqli->query($query);
var_dump($result);