Simple way to read single record from MySQL

Question

What s the best way with PHP to read a single record from a MySQL database  E g    SELECT id FROM games   I was trying to find an answer in the old questions  but had no luck

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Warning   Your SQL isn t a good idea  because it will select all rows  no WHERE clause assumes  WHERE 1    and clog your application if you have a large number of rows    What s the point of selecting 1 000 rows when 1 will do    So instead  when selecting only one row  make sure you specify the LIMIT clause    sql    SELECT id FROM games LIMIT 1       Select ONLY one  instead of all  result    db- gt query  sql    row    result- gt fetch assoc    echo  Game ID     row  id      This difference requires MySQL to select only the first matching record  so ordering the table is important or you ought to use a WHERE clause   However  it s a whole lot less memory and time to find that one record  than to get every record and output row number one

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I could get result by using following    resu   mysqli fetch assoc mysqli query  conn   SELECT   FROM employees1 WHERE pkint  58     echo     lt br   gt     resu  pkint       lt br   gt      resu  f1       lt br   gt      resu  f2      lt br   gt      resu  f3      lt br   gt      resu  f4         employees 1 is table name   pkint is primary key id   f1 f2 f3 f4 are field names   resu is the variable shortcut for result  Following is the output    lt br   gt 58  lt br   gt Caroline  lt br   gt Smith  lt br   gt Zandu Balm

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link   mysql connect  localhost   root   yourPassword   mysql select db  database name    link    sql    SELECT id FROM games LIMIT 1    result   mysql query  sql   link  or die mysql error      row   mysql fetch assoc  result   print r  row     There were few things missing in ChrisAD answer  After connecting to mysql it s crucial to select database and also die   statement allows you to see errors if they occur   Be carefull it works only if you have 1 record in the database  because otherwise you need to add WHERE id xx or something similar to get only one row and not more  Also you can access your id like  row  id

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Best way  aside some usual ways of retrieving a single record from the database with PHP go like that   with mysqli   sql    SELECT id  name  producer FROM games WHERE user id   1    result    db- gt query  sql    row    result- gt fetch row      with Zend Framework    Inside the table class   select    this- gt select  - gt where  user id       1      row    this- gt fetchRow  select

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One more answer for object oriented style  Found this solution for me    id    dbh- gt query  SELECT id FROM mytable WHERE mycolumn    foo   - gt fetch object  - gt id    gives back just one id  Verify that your design ensures you got the right one

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I agree that mysql result is the easy way to retrieve contents of one cell from a MySQL result set  Tiny code    r   mysql query  SELECT id FROM table   or die mysql error     if  mysql num rows  r   gt  0        echo mysql result  r      will output first ID     echo mysql result  r  1      will ouput second ID

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at first   CREATE connection  conn    new mysqli  localhost    User DB    Pass DB    Table name     and then get the record target    query    quot SELECT id FROM games LIMIT 1 quot      for example query  result    conn- gt query  query      run query if  result- gt num rows     if exist something      ret    result- gt fetch array MYSQLI ASSOC     fetch data  else       ret   false    var dump  ret

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Say that you want to count the rows in an existing table  Use mysql result with only one parameter set to  quot 0 quot  Like this   string   mysql result            mysql query  quot SELECT COUNT    FROM database name table name  quot    0    Put       around database name and table name var dump  string       string 1   quot 5 quot    if it only has 5 records in the table  Note  if you query for something else like SELECT   FROM database table LIMIT 1  and the table has more than one column then you WILL NOT get an array   in your var dump you will get the first column only

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Use LIMIT 1  its easy     rows    db- gt query  select id from games LIMIT 1     row      rows- gt fetch object    echo  row- gt id

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I really like the philosophy of the ezSQL database library  which wraps the native SQL methods in an easier-to-use interface   Fetching a single value from the database is trivial      id    db- gt get var  SELECT id FROM games WHERE          It also makes it easy to fetch a single row  column  or set of rows

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Using PDO you could do something like this    db   new PDO  mysql host hostname dbname dbname    username    password      stmt    db- gt query  select id from games where         id    stmt- gt fetchColumn 0   if   id     false        echo  id      You obviously should also check whether PDO  query   executes the query OK  either by checking the result or telling PDO to throw exceptions instead

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function getSingleRow  table   where clause      column        debug 0         SelectQuery   createQuery  table   where clause   column         result   executeQuery  SelectQuery  debug       while  row   mysql fetch array  result              row val    row            return  row val

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Assuming you are using an auto-incrementing primary key  which is the normal way to do things  then you can access the key value of the last row you put into the database with    userID   mysqli insert id  link     otherwise  you ll have to know more specifics about the row you are trying to find  such as email address   Without knowing your table structure  we can t be more specific   Either way  to limit your SELECT query  use a WHERE statement like this   Generic Example    getID   mysqli fetch assoc mysqli query  link   SELECT userID FROM users WHERE something    unique       userID    getID  userID       Specific example  Or a more specific example    getID   mysqli fetch assoc mysqli query  link   SELECT userID FROM users WHERE userID   1      userID    getID  userID

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results    mysqli- gt query  SELECT product code  product name  product desc  product img name  price FROM products WHERE id   1

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The easiest way is to use mysql result  I copied some of the code below from other answers to save time    link   mysql connect  localhost   root   yourPassword   mysql select db  database   link    sql    SELECT id FROM games   result   mysql query  sql  link     num rows   mysql num rows  result       i is the row number and will be 0 through  num rows-1 for   i   0   i  lt   num rows   i           value   mysql result  result  i   id        echo  Row    i         value    n

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Easy way to Fetch Single Record from MySQL Database by using PHP List  The SQL Query is SELECT user name from user table WHERE user id   6  The PHP Code for the above Query is   sql select        sql select     SELECT     sql select       user name     sql select     FROM user table     sql select     WHERE user id   6      rs id   mysql query  sql select   link  or die mysql error     list  userName    mysql fetch row  rs id        Note  The List Concept should be applicable for Single Row Fetching not for Multiple Rows

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Better if SQL will be optimized with addion of LIMIT 1 in the end     query    select id from games LIMIT 1      SO ANSWER IS  works on php 5 6 3    If you want to get first item of first row even if it is not ID column    queryExec  query  - gt  fetch array   0     If you want to get first row single item from DB   queryExec  query  - gt  fetch assoc      If you want to some exact column from first row  queryExec  query  - gt  fetch assoc    columnName      or need to fix query and use first written way

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First you connect to your database  Then you build the query string  Then you launch the query and store the result  and finally you fetch what rows you want from the result by using one of the fetch methods    link   mysql connect  localhost   root   yourPassword   mysql select db  database   link    sql    SELECT id FROM games   result   mysql query  sql  link     singleRow   mysql fetch array  result   echo  singleRow    Edit  So sorry  forgot the database connection  Added it now

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id   mysql result mysql query  SELECT id FROM games LIMIT 1   0

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mysqli report MYSQLI REPORT ERROR   MYSQLI REPORT STRICT    db   new mysqli  localhost    tmp    tmp    your db       db- gt set charset  utf8mb4     if  row    db- gt query  quot SELECT id FROM games LIMIT 1 quot  - gt fetch row        NULL or array      id    row 0

[php] Simple way to read single record from MySQL

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