WordPress通过SQL查询获取帖子

Question

I grabbed the code that wordpress uses to display the default calendar and it gets the dates like this:

if ( $day == current_time( 'j' ) &&
    $thismonth == current_time( 'm' ) &&
    $thisyear == current_time( 'Y' ) ) {
}

Using those values (day, month and year), how can I write a mysql query that pulls the post created on that specific date?

I tried to have this link as reference but my sql skills are close to none.

EDITED:

My table name is "wp_posts" and the date column is named as post_date.

Accosrding to the answer here I did the following:

$date = new DateTime($thisyear."-".$thismonth."-".$day);

$date->setTime($hours, $minutes, $seconds);

$date_format = $date->format("Y-m-d H:i:s");

$request = $pdo->query("SELECT * FROM $wpdb->posts WHERE post_date = ".$date_format);

$result = $request->fetch();

but when I var_mp $result, nothing happens

var_dump($result);

Answer 1

If the field of your database is type of "DATE" you can (with PDO):

$date = new DateTime($thisyear."-".$thismonth."-".$day); //__Create my object date

$date_format = $date->format("Y-m-d"); //__Date formatting

$request = $pdo->query("SELECT * FROM my_table WHERE date_article = ".$date_format); //__Create my SQL query

$result = $request->fetch() //__Or 'fetchAll' if many result could be possible

---

EDIT

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If the field of your database is type of "DATETIME" you can (with PDO):

$date = new DateTime($thisyear."-".$thismonth."-".$day); //__Create my object date

$date->setTime($hours, $minutes, $seconds);

$date_format = $date->format("Y-m-d H:i:s"); //__Date formatting

$request = $pdo->query("SELECT * FROM my_table WHERE date_article = ".$date_format); //__Create my SQL query

$result = $request->fetch() //__Or 'fetchAll' if many result could be possible

$result will contain your array with your article(s).

Answer 2

Sorry I can't comment on the above answer yet. So I'm going to post my comment as an answer.

I believe noting is being returned because your query doesn't match any value.

First

Dump $date_format and see the output.

Secondly

Compare the output you get with the values in post_date

Lastly

Edit the build up of $date_format to match the values in post_date accordingly.