WordPress用户配置文件上传-如果页面已保存，则重置文件

我在函数中设置了各种不同的额外配置文件字段。php然而，如果用户上载图像并保存图像设置的表单，则使用上载，但是如果用户返回并编辑另一个字段，则会将图像字段设置为null。

这是我函数中的代码。php文件。任何帮助都将不胜感激。

     <?php

add_action( \'show_user_profile\', \'extra_user_profile_fields\' );
add_action( \'edit_user_profile\', \'extra_user_profile_fields\' );

function extra_user_profile_fields( $user ) { 

$r = get_user_meta( $user->ID, \'picture\', true );
    ?>


<!-- Artist Photo Gallery -->
<h3><?php _e("Public Profile - Gallery", "blank"); ?></h3>

<table class="form-table">

<tr>
        <th scope="row">Picture</th>
        <td><input type="file" name="picture" value="" />

            <?php //print_r($r); 
                if (!isset($r[\'error\'])) {
                    $r = $r[\'url\'];
                    echo "<img src=\'$r\' />";
                } else {
                    $r = $r[\'error\'];
                    echo $r;
                }
            ?>
        </td>
    </tr>

</table> 



<?php
}

add_action( \'personal_options_update\', \'save_extra_user_profile_fields\' );
add_action( \'edit_user_profile_update\', \'save_extra_user_profile_fields\' );

function save_extra_user_profile_fields( $user_id ) {

if ( !current_user_can( \'edit_user\', $user_id ) ) { return false; }

$_POST[\'action\'] = \'wp_handle_upload\';
$r = wp_handle_upload( $_FILES[\'picture\'] );
update_user_meta( $user_id, \'picture\', $r, get_user_meta( $user_id, \'picture\', true ) );

}

}

add_action(\'user_edit_form_tag\', \'make_form_accept_uploads\');
function make_form_accept_uploads() {
    echo \' enctype="multipart/form-data"\';
}

if( $_FILES[\'picture\'][\'error\'] === UPLOAD_ERR_OK ) { $upload_overrides = array( \'test_form\' => false ); // if you don’t pass \'test_form\' => FALSE the upload will be rejected $r = wp_handle_upload( $_FILES[\'picture\'], $upload_overrides ); update_user_meta( $user_id, \'picture\', $r ); }

// for file upload add_action(\'user_edit_form_tag\', \'make_form_accept_uploads\'); function make_form_accept_uploads() { echo \' enctype="multipart/form-data"\'; } function custom_user_profile_fields($user) { if(is_object($user)) { $r = get_user_meta( $user->ID, \'portfolioimage\', true ); } else { $r = null; } ?> ## Heading ## <table class="form-table"> <h3>Portfolio</h3> <tr> <th><label for="image">Portfolio Image</label></th> <td> <?php if (!isset($r[\'error\'])) { $r = $r[\'url\']; echo "<img src=\'$r\' width=\'96\' hieght=\'96\'/>"; } else { $r = $r[\'error\']; echo $r; } ?> <br/> <span class="description">Please upload an image for your profile.</span> <br/> <input type="file" class="button-primary" value="Upload Image" id="portfolioimage" name="portfolioimage" multiple/><br /> </td> </tr> </table> <?php } add_action( "show_user_profile", "custom_user_profile_fields" ); add_action( "edit_user_profile", "custom_user_profile_fields" ); add_action( "user_new_form", "custom_user_profile_fields" ); function save_custom_user_profile_fields($user_id) { # again do this only if you can if(!current_user_can(\'manage_options\')) return false; if( $_FILES[\'portfolioimage\'][\'error\'] === UPLOAD_ERR_OK ) { $upload_overrides = array( \'test_form\' => false ); $r = wp_handle_upload( $_FILES[\'portfolioimage\'], $upload_overrides ); update_user_meta( $user_id, \'portfolioimage\', $r ); } } add_action(\'user_register\', \'save_custom_user_profile_fields\'); add_action(\'profile_update\', \'save_custom_user_profile_fields\');

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