PHP-如何将今天和昨天的日期与数据库字段进行匹配

Question

i have got data in following format in database

  2015-01-16 14:53:02   

i am trying to get record matach with today and another for yesterday date.

here is what i have tried

 //fetch today records
    if ($button1pressed=="T1"){
    $today = date('Y-m-d H:i:s');  
    $sqlquery="WHERE `datetime`="."'".$today."'";
    }

 //fetch yesterday records
    if ($button1pressed=="T2"){
    $yesterday = date('Y-m-d H:i:s',time() - 3600); 
    $sqlquery="WHERE `datetime`="."'".$yesterday."'";
    }

and sql is something like this.

  $sql="SELECT * FROM  `me_olb1` ".$sqlquery ;

please need your help

thanks

Answer 1

That's not going to work, it will only give you results for the exact same hour, minute and second.

You would need to extract the date from the datetime field. For example:

for today:

$sqlquery = " WHERE DATE(`datetime`)=DATE(NOW()) ";

for yesterday:

$sqlquery = " WHERE DATE(`datetime`)=DATE(DATE_SUB(NOW(), INTERVAL 1 DAY)) ";