Simple MySQLi abstraction layer into associative array

gistfile1.php

<?php
/*****************************| MYSQLI CONNECTION FUNCTION |*****************************/
/**
	* Simple MySQLi abstraction layer
	*
	* @param resource $mysqli The MySQLi connection link
	* @param string   $query  The MySQL query for prepaired statement
	* @param array    $v      The parameters to replace ? in $query. First element must be the type
	* @param integer  $o      Option for more debug infos [0]=no infos(default) [1]=adding debug infos
	*
	* @return array [for select]=associative array of table result  [for everything else]=associative array with affectedRows,info and insertID
	*/
function connectDB($mysqli,$query,$v=array(),$o=0) {

	if($mysqli->connect_errno) {
		return array('info'=>array('error'=>'Connect failed: '.$mysqli->connect_error)); //error handling here
		exit();
	}

	if(substr_count($query,"?")!=strlen($v[0]) || strlen($v[0])!=((count($v)-1)>=0 ? (count($v)-1) : 0)) {
		return array('info'=>array('error'=>'Placeholders are unequal! placeholders:'.substr_count($query,"?").', replacements:'.strlen($v[0]).', param:'.(count($v)-1).' ('.$v[0].')')); //error handling here...
		exit();
	}

	if($res=$mysqli->prepare($query)) {
			//dynamically bind all $v
			if($v) {
			$values=array($v[0]);
			for($i=1; $i<count($v); $i++) {
				${'bind'.$i}=$v[$i];
				$values[]=&${'bind'.$i};
			}
			call_user_func_array(array($res,'bind_param'),$values);
		}
		$res->execute();

		//bind all table rows to result
		if(strtolower(substr($query,0,6))=="select") {
			$field=$fields=$tempRow=array();
			$meta=$res->result_metadata();
			while($field=$meta->fetch_field()) {
				$fieldName=$field->name;
				$fields[]=&$tempRow[$fieldName];
			}
			$meta->free_result();
			call_user_func_array(array($res,"bind_result"),$fields);

			//return associative array
			$results=array();
			$i=0;
			while($res->fetch()) {
				$results["res"][$i]=array();
				foreach($tempRow as $k=>$v2) $results["res"][$i][$k] = $v2;
				$i++;
			}
			$res->free_result();

		}
		else { //return infos about the query
			$results["info"]["affectedRows"]=$mysqli->affected_rows;
			$results["info"]["insertID"]=$mysqli->insert_id;
		}

		$res->close();
	}

	if($o===1) { //adding debug infos
		if($mysqli->warning_count) {
			if($err=$mysqli->query("SHOW WARNINGS")) {
				$row=$err->fetch_row();
				$results["info"]["error"].=$row[0].' ('.$row[1].'): '.$row[2];
				$err->close();
			}
		}
		$results["info"]["info"]=$mysqli->info;
		$q=$query;
		for($i=1;$i<count($v);$i++) $q=preg_replace("/\?/",(substr($v[0],($i-1),1)=="s" ? '"' : '').$v[$i].(substr($v[0],($i-1),1)=="s" ? '"' : ''),$q,1);
		$results["info"]["query"]=$q;
		$results["info"]["param"]=json_encode($v);
	}

	if(strtolower(substr($query,0,6))=="update" || strtolower(substr($query,0,6))=="delete") { //optimize at update or delete
		preg_match_all('/((update|delete) `(.*)` )/i',$query,$tables);
		foreach($tables[3] as $t) $mysqli->query('OPTIMIZE TABLE '.$t);
	}

	return $results;
}