WP 如何在元字段中保存逗号格式数字

Question

我已将自定义字段添加到 post 编辑器以将温度保存为数值。如果我在此字段中输入例如“15,2”或“15.2”并保存 post，它会保存为“152”。

我该如何解决？

表单字段：

<label for="temp_min">Temp Min.:</label><br />
    <input class="widefat" type="text"  name="temp_min" id="temp_min" value="<?php echo esc_attr( get_post_meta( $object->ID, '_temp_min', true ) ); ?>" size="30" />

保存 class:

      /* Get the posted data and sanitize it for use as an HTML class. */
  $new_meta_value = ( isset( $_POST[$fields[$i]] ) ? sanitize_html_class( $_POST[$fields[$i]] ) : '' );

  /* Get the meta key. */
   $meta_key = $meta_keys[$i];

  /* Get the meta value of the custom field key. */
  $meta_value = get_post_meta( $post_id, $meta_key, true );

  /* If a new meta value was added and there was no previous value, add it. */
  if ( $new_meta_value && '' == $meta_value )
    add_post_meta( $post_id, $meta_key, $new_meta_value, true );

  /* If the new meta value does not match the old value, update it. */
  elseif ( $new_meta_value && $new_meta_value != $meta_value )
    update_post_meta( $post_id, $meta_key, $new_meta_value );

  /* If there is no new meta value but an old value exists, delete it. */
  elseif ( '' == $new_meta_value && $meta_value )
    delete_post_meta( $post_id, $meta_key, $meta_value );
  }

Answer 1

sanitize_html_class 删除 . 或 , 所以 19,5 或 19.5 将得到 195.

Strips the string down to A-Z,a-z,0-9,_,-.

WP 抄本：https://codex.wordpress.org/Function_Reference/sanitize_html_class

只需使用 sanitize_text_field 或 (float) $_POST[$fields[$i]]:

/* Get the posted data and sanitize it for use as an HTML class. */
$new_meta_value = ( isset( $_POST[$fields[$i]] ) ? sanitize_text_field( $_POST[$fields[$i]] ) : '' );

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