Study goal: Matters needing attention

Because I am study ASP first, therefore makes PHP again time will discover that many places need to adapt.

1st, the attention do not leak the semicolon
2nd, before the attention do not leak the variable $
3rd, uses SESSION time pays attention do not omit session_start();

If occurs is wrong, may use the following methods:
1st, if is the SQL sentence makes a mistake, then has output the SQL sentence on the annotation, the attention also wants the annotation to adjust the following execution SQL sentence
2nd, if is the variable for spatial, mostly has not transmitted the arriving, the output variable inspects, inspects the form id and name
3rd, if is the database connection makes a mistake, inspects whether to open MY SQL correctly and whether to omit the connection sentence
4th, the attention shrinks, removes the mistake which the parenthesis area does not match

In makes the big website time, my mentality constructs the database first, determines each field the function, with table between relations. Then the design backstage contact surface, starts from the increase data to start, because increases whether to succeed may confirm directly to the database inside, completed the increase to make the demonstration again the page, finally was both’s union. Generally speaking the backstage includes the increase deletion to revise and to demonstrate that the backstage did not have the question, the onstage also did not have what major problem. The onstage also needs to pay attention to the security and fault-tolerant also has is the output format.

Good,  tomorrow will say, if will upload the document with PHP and sends the mail.