Question

我在帖子编辑器中添加了一个自定义字段，将温度保存为数字值。如果我举个例子＆＃34; 15,2＆＃34;或＆＃34; 15.2＆＃34;在此字段中保存帖子，其保存为＆＃34; 152＆＃34;。

我该如何解决？

表格字段：

<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" />

保存课程：

      /* 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,，因此19,5或19.5将导致195。

将字符串向下拉到A-Z，a-z，0-9，_， - 。

WP codex：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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