Jump to content

Function to insert entry and return id. if already exists, return id of existing


inktri

Recommended Posts

What's the most efficient algorithm for a function that tries to insert an entry... if the entry already exists, it returns the id of that already existing entry, else it inserts the new entry and returns the id of the new entry?

 

Thanks for the help

Link to comment
Share on other sites

<?php

//Query database to check if entry already exists
$query = mysql_query("SELECT entryID FROM table WHERE {condition}");

//If it does exist
if (mysql_num_rows($query) > 0){
   $row = mysql_fetch_assoc($query);
   echo "Entry already exists, the id is {$row['entryID']}";

//if it doesn't exist
} else {
   
   //insert entry to DB
   $insert = mysql_query("INSERT INTO table (...) VALUES (...)");
   $id = mysql_insert_id();
   
   echo "New entry added, the id of the new entry is $id";
}

?>

Link to comment
Share on other sites

This thread is more than a year old. Please don't revive it unless you have something important to add.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.