How to debug sql statement errors in php

How to debug sql statement errors in php: 1. Debug PHP SQL errors through the die statement; 2. Debug PHP SQL errors through the "mysql_error" statement.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to debug sql statement errors in php?

Debug PHP SQL errors through die and mysql_error statements

1. Code

alert('添加成功！'); window.location.href='index.php';";
}else{ 
echo "添加失败!!"; 
}    
}
?>












  

    
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2. Running results

Unknown column 'password' in 'field list'

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