thinkphp Find method queries a data record

Find ()

The thinkphp find () method is a method similar to the Select () usage, where the find () query always has only one data, that is, the system automatically adds limit 1 restrictions.

When confirming that a query's data record can only be a single record, it is recommended to use the Find () method query, such as user login account detection:

Public Function Chekuser () {    header ("content-type:text/html; Charset=utf-8 ");    $Dao = M ("User");        Constructs the query condition    $condition [' username '] = ' Admin ';    $condition [' password '] = MD5 (' 123456 ');    Query data    $list = $Dao->where ($condition)->find ();    if ($list) {        echo ' account is correct ';    } else{        echo ' account/password error ';    }}

Another difference from select () is that find () returns a one-dimensional array that can output the value of an array cell directly in the template without using a label loop output such as volist:

{$list [' username ']}

Find () Primary key query

When the condition parameter of the Find () query is a table primary key, you can write the parameter directly inside the method, such as:

$Dao = M ("User"), $list = $Dao->find (1);

The user table primary key is UID, this example will query uid=1 data, this is one of the activerecords pattern implementation, concise and intuitive.

The above describes the Thinkphp Find method query a data record, including the aspects of the content, I hope the PHP tutorial interested in a friend helpful.

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