mysql - Parameter warning php -


इस सवाल का पहले से ही एक उत्तर है: < 33 उत्तरों 

  $ name1 = 
   $ _POST [ 'name1']; $ Lname = $ _POST ['lname']; $ Uname = $ _POST ['uname']; $ Email1 = $ email1; $ ईमेल 2 = $ ईमेल 2; $ Pass1 = $ pass1; $ Pass2 = $ pass2; $ पास 1 = एमडी 5 ($ पास 1); $ Sql ​​= "का चयन करें * उपयोगकर्ताओं से जहां uname = $ uname"; यदि (mysql_num_rows ($ sql) & gt; 0) {गूंज "क्षमा करें, वह उपयोगकर्ता पहले से मौजूद है"; बाहर जाएं(); }

चेतावनी: mysql_num_rows () पैरामीटर 1 को संसाधन होने की उम्मीद है, /nas/students/unix/public_html/dsa1/register.php में लाइन 27 पर दिया गया है

निश्चित रूप से:

int mysql_num_rows (संसाधन $ परिणाम)

पुनर्प्राप्त करता है एक परिणाम सेट से पंक्तियों की संख्या। यह कमांड केवल SELECT या SHOW जैसे एक बयान के लिए मान्य है जो कि वास्तविक परिणाम सेट को वापस लाती है।

एक संसाधन एक एसक्यूएल क्वेरी से कुछ अलग है इस मामले में एक संसाधन है जो PHP MySQL लाइब्रेरी एक कथन के संदर्भ में चारों ओर से गुजरता है जो पहले से ही चल रहा है।

आपको एसक्यूएल स्टेटमेंट को mysql_query को चलाने के लिए पहले चलाने की जरूरत है । mysql_num_rows तब उस फ़ंक्शन कॉल के नतीजे लेगा और आपको बताएगा कि उसमें कितनी पंक्तियाँ हैं।


Comments

Post a Comment

Popular posts from this blog

c# - Reactive Extensions ControlScheduler -

Well, I'm using Reactive Extension Event Handler to handle my app events, I run the headlines on the Yuri thread. I also use ControlSubular for However, recently I am getting cross thread exception despite using control scheduler and I do not know what the problem is. Code: Observable.FromEventPattern & Lt; String & gt; (CC, "UiAlertMessage", New Control Session ()) Subscribe (_ = & gt; {Alert Control. (Show this language, title, _.EventArgs.UppercaseFirst ());}); The new control scheduler (this) is not to run the code on the UI control thread, so I do not get cross threading exceptions? you should do Observable.FromEventPattern & lt; String & gt; (CC, "UiAlertMessage"). AboveOption (this). Subscribe (_ = & gt; {Alert Control. (Show this language, Titles, _.EventArgs.UppercaseFirst ());}); This is the standard way of sending a scheduler related to specific controls. Passing control scheduler as you have got subsc...
Read more

scala - Play Framework - how to bind form to a session field -

Is there any way, I can get some parameters from the header, cookies (log in userId in my case) , And then apply it in a form which I know who will deposit the ticket? SupportForm supportForm: form [supportTicket] = form (mapping ("question" -> text, "priority" -> text) (apply support ticket. (HelpText.update) What are the good practices here? What is the call to apply the request, when I can use it (and also a good practice?) Edit An issue, absolutely deceiving anyone if I were to create a hidden area with this value. It could Ript, but the issue may be re-used in any way to verify and return the form, it can not be sure how it ....
Read more

c++ - Why does Visual Studio Release build break on non-executing code line -

When I created my C ++ program with the default release configuration in Visual Studio 10, I put a breakpoint on one line Who should never be reached. What confunded me was that when the program is running then it stopped at the breaking point. Adding a volatile statement and transferring this line to the break point does not break the execution of the code where the brake appears (though does not produce the same behavior as creating a minimum project with this function). Why is the "Release Debugger" (?) Step on this line and when executing breakpoints are executed? If I keep going after the break then false statement continues to return code execution. bool bounding box :: Cutting (int32_t xpos, int32_t ypos, int32_t dx, int32_t dy) const {int32_t intersectionX; Int32_t intersections; If ((dx> 0 & amp; amp; and & amp; xpos> rights) || (dx gt; Top) || (D & LT; 0 & amp; AOPO & Lt; BOT)) Return; If (DX! = 0) {intersection Y = ypos + (left...
Read more