Settings API in Section

我有一个代码片段，它使用设置API在设置->常规中创建了一个选项。但是，这些值没有更新，我想知道是否有人可以帮助指出以下代码的问题

function admin_init_callback() {

    register_setting( \'msp_settings\', \'msp_duration\' );

    add_settings_section( \'msp_settings\', __(\'Multisite Posts Configuration\'), false, \'general\' );

    add_settings_field( \'msp_duration\', __(\'Cache Duration\'), array($this, \'msp_settings_callback\'), \'general\', \'msp_settings\', array(
        "id"    => "msp_duration",
        "type"  => "dropdown",
        "values"=> array(
            array(
                "name"  => __(\'Every 6 hours\'),
                "value" => 60 * 60 * 6,
            ),
            array(
                "name"  => __(\'Every 12 hours\'),
                "value" => 60 * 60 * 12,
            ),
            array(
                "name"  => __(\'Every 24 hours\'),
                "value" => 60 * 60 * 24,
            ),
            array(
                "name"  => __(\'Every 48 hours\'),
                "value" => 60 * 60 * 48,
            ),
            array(
                "name"  => __(\'Every Week\'),
                "value" => 60 * 60 * 24 * 7,
            ),
        )
    ) );

    return;

}

function msp_settings_callback($args) {

    $value = get_option( $args["id"] );

    if("dropdown" == $args["type"]) {

        var_dump($value);
        ?>
        <select name="<?php echo $args["id"]; ?>">
            <?php
                foreach ($args["values"] as $option) {
                    echo \'<option value="\' . $option["value"] . \'" \';
                    checked( $value, $option["value"], $echo = true );
                    echo \'>\' . $option["name"] . \'</option>\';
                }
            ?>
        </select>
        <?php

    }

}

add_filter( \'admin_init\' , \'register_fields\' ); function register_fields() { register_setting( \'general\', \'msp_duration\', \'esc_attr\' ); add_settings_field( \'msp_duration\', __(\'Cache Duration\') ,\'fields_html\', \'general\' ); } function fields_html() { $value = get_option( \'msp_duration\' ); $fields = array( array( "name" => __(\'Every 6 hours\'), "value" => 60 * 60 * 6, ), array( "name" => __(\'Every 12 hours\'), "value" => 60 * 60 * 12, ), array( "name" => __(\'Every 24 hours\'), "value" => 60 * 60 * 24, ), array( "name" => __(\'Every 48 hours\'), "value" => 60 * 60 * 48, ), array( "name" => __(\'Every Week\'), "value" => 60 * 60 * 24 * 7, ), ); $output = \'<select name="msp_duration">\'; foreach( $fields as $option ) { $output .= \'<option value="\'. $option[\'value\'] .\'" \'. selected( $option[\'value\'], $value, false ) .\'>\'; $output .= $option["name"]; $output .= \'</option>\'; } $output .= \'</select>\'; echo $output; }

function msp_settings_callback($args) { $value = get_option( $args["id"] ); if("dropdown" == $args["type"]) { var_dump($value); ?> <select name="<?php echo $args["id"]; ?>"> <?php foreach ($args["values"] as $option) { echo \'<option value="\' . $option["value"] . \'" \'; selected( $value, $option["value"]); echo \'>\' . $option["name"] . \'</option>\'; } ?> </select> <?php } }

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