将元密钥与Pre Get POST中的当前日期进行比较

我正在寻找一种将字符串与当前时间进行比较的方法。我发现了这个问题“pre_get_posts filter using numeric meta_query comparison (from dates)“我对如何让它发挥作用感到困惑。

$expire = get_field(\'status_time_duration\') + get_the_time(\'U\');  // UNIX time that gets the publish date plus an additional time in seconds

基本上，我的查询是在字符串$expire 小于当前时间。

我的当前代码：

function alerts_opby( $qvars ){ //function to call up the query
$qvars[] = \'opby_alerts\';
return $qvars;
}
add_filter( \'query_vars\', \'alerts_opby\' );

function opby_query( $query ) { //pre_get_posts functions
if (isset( $query->$qvars[\'opby_alerts\'] )) {
    $expire = get_field(\'status_time_duration\') + get_the_time(\'U\');
    $current = date( \'U\', current_time( \'timestamp\', 0 ) );
    $query->set(\'tax_query\', array(array(\'taxonomy\' => \'post_format\',\'field\' => \'slug\',\'terms\' => array( \'post-format-status\' ),\'operator\'=> \'IN\'),
),\'meta_query\', [
    \'relation\' => \'OR\',
    [
     \'key\'     => \'status_time_duration\',
     \'value\'   => $expire,
     \'compare\' => \'<=\',
     \'type\'    => \'NUMERIC\',
    ],
    [
     \'key\'     => \'status_time_duration\',
     \'compare\' => \'NOT EXISTS\',
    ],
],
    $query->set(\'posts_per_page\', -1));
}
return $query;
}
add_action( \'pre_get_posts\', \'opby_query\' );

\'meta_query\', [ \'relation\' => \'OR\', [ \'key\' => \'status_time_duration\', \'value\' => date( \'U\' ), \'compare\' => \'<=\', \'type\' => \'NUMERIC\', ], [ \'key\' => \'status_time_duration\', \'compare\' => \'NOT EXISTS\', ], ],

Calculations in functions.php

我为自己创建了一个发票主题，并试图在自定义列中获取发票总额。我已经尝试调整模板页面中使用的代码，以便在函数中显示这一点。php文件，但它不工作。我的乘法操作数出现了一个操作数错误，我不知道为什么。这是我的代码（如有任何帮助，将不胜感激）。if( $column_name == \'invoice_total\' ) { $hours = 0; // This allows counting of each sub_field //* Set repeater va

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Calculations in functions.php