php multiple array multiple explode - php

Question

Php code
<?php
$d1 = "a:1,b:2,c:3,d:4"; //field number variable.. sometimes 4 or 10
$d2 = explode(',', $d1);
foreach ($d2 as $key => $value) {
$arr1 = explode(':',$d2[$key]);
foreach ($arr1 as $key1 => $value1) {
$arr1[] = $key1;
}
echo $arr1[0] . "," . $arr1[1] . ",";
}
?>
Result
a,1,b,2,c,3,d,4,
Fields (a,b,c,d) (field number variable.. sometimes 4 or 10..)
Values (1,2,3,4)
Expected result
Insert into Table1 (a,b,c,d) values (1,2,3,4)
How can i do to make this result ? (it would be good if it is a complete example)
Thanks for all answers

Answer 1

I know preg_split() will do the task fine. But last day when I got the similar problem I did this solution with the help of http://php.net/manual/en/function.explode.php#111307
function multiexplode ($delimiters,$string) {
$ready = str_replace($delimiters, $delimiters[0], $string);
$launch = explode($delimiters[0], $ready);
return $launch;
}
$d1 = "a:1,b:2,c:3,d:4";
$result = implode(',',multiexplode(array(",",".","|",":"),$d1));
echo $result;
See demo : https://eval.in/871705
Edit: As per comment by SO
$d1 = "a:1,b:2,c:3,d:4"; //field number variable.. sometimes 4 or 10
$d2 = explode(',', $d1);
$result = [];
foreach ($d2 as $key => $value) {
list($k,$v) = explode(':',$value);
$result[$k] = $v;
}
print '<pre>';
print_r($result);
print '</pre>';
echo "INSERT INTO table1 (".implode(', ',array_keys($result)). ") VALUES (".implode(', ',array_values($result)). ")";

Answer 2

In recent PHP versions you can destructure the result of explode() on $d2[$key] (you should improve your naming, it helps!) into two separate arrays like so:
$keys = $values = [];
foreach (explode(',', $d1) as $parameter)
[$keys[], $values[]] = explode(':', $parameter);
var_dump($keys, $values);
var_dump(array_combine($keys, $values));
After that you can simply build that into a query. However, it seems like your data might be user-provided so you should be very wary of that data. You seem to be almost introducing a SQL injection vulnerability in your code.
I suggest checking the $keys array against a whitelist and after that properly escaping all $values before using any of this in a query. You may find some info here: PDO with INSERT INTO through prepared statements

Answer 3

You can use preg_split.
$output = preg_split( "/ (,|:) /", $input );
Next, you can do a check in a loop.
foreach ($output as $value)
{
if(is_number($value))
$keys[] = $value;
else
$values[] = $value;
}

Answer 4

Since the string is close to json format i think making it a true json and decode it means no looping or exploding is an efficient solution.
$d1 = "a:1,b:2,c:3,d:4";
$d1 = "{\"".str_replace(array(",",":"),array('","','":"'), $d1)."\"}";
$arr = json_decode($d1, true);
$table = array_keys($arr);
$values = array_values($arr);
Var_dump($table);
Var_dump($values);
https://3v4l.org/Yqrbe
Edit; if you need the string you named as expected result use this:
$str ="Insert into Table1 (". Implode(",", $table) .") values (" . Implode(",", $values).")";
Echo $str;

Answer 5

Used below code.
Just little bit changes in your code this is working fine.
$d1 = "a:1,b:2,c:3,d:4"; //field number variable.. sometimes 4 or 10
$d2 = explode(',', $d1);
$colums = $values = array();
foreach ($d2 as $key => $value) {
$arr1 = explode(':',$value);
$colums[] = "`".$arr1[0]."`";
$values[] = "'".$arr1[1]."'";
}
$sql = 'insert into `Table1` ('.implode(",",$colums).') values ('.implode(",",$values).')';

Answer 6

Try with following logic:
foreach ($d2 as $key => $value) {
$arr1 = explode(':', $value);
if (count($arr1) == 2){
$arr[$arr1[0]] = $arr1[1];
}
}
Get all fields and values as comma separated:
$fields = array_keys($arr);
¢values = array_values($arr);
And use these variables into your query:
$fields = implode(",", array_keys($arr));
$values = implode(",", array_values($arr));
$query = "INSERT INTO Table1 (".$fields.") VALUES (".$values.")";
Running snipet: https://ideone.com/EXAPOt