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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
error_reporting(E_ALL^E_WARNING);
mysqli_report(MYSQLI_REPORT_ALL ^ MYSQLI_REPORT_STRICT);
$q="кривой запрос";
$res=$mysqli->query($q);
if(!$res){
if($mysqli->error)
echo "SQL ERROR {$mysqli->errno}:{$mysqli->error}\n$q";
exit;
}