Question

这个主题有错误， http://www.mafiashare.net/download/sound-rock-music-band-wordpress-theme/ 当我尝试激活它时，显示

( ! ) SCREAM: Error suppression ignored for
( ! ) Fatal error: Cannot re-assign auto-global variable _POST in C:\wamp\www\web\wp-content\themes\soundrock\functions.php on line 48
Call Stack
#   Time    Memory  Function    Location
1   0.0014  364560  {main}( )   ..\themes.php:0
2   0.0043  433520  require_once( 'C:\wamp\www\web\wp-admin\admin.php' )    ..\themes.php:10
3   0.0048  451648  require_once( 'C:\wamp\www\web\wp-load.php' )   ..\admin.php:30
4   0.0052  463256  require_once( 'C:\wamp\www\web\wp-config.php' ) ..\wp-load.php:29
5   0.0061  553312  require_once( 'C:\wamp\www\web\wp-settings.php' )   ..\wp-config.php:90

所以在第48行的functions.php中，我删除了这段代码，然后主题正在运行，但是我想知道它为什么会抛出错误？

function events_meta_save($_POST, $post_id) {
    global $wpdb;
    if ( empty($_POST["event_social_sharing"]) ) $_POST["event_social_sharing"] = "";
    if ( empty($_POST["event_start_time"]) ) $_POST["event_start_time"] = "";
    if ( empty($_POST["event_end_time"]) ) $_POST["event_end_time"] = "";
    if ( empty($_POST["event_all_day"]) ) $_POST["event_all_day"] = "";
    if ( empty($_POST["event_booking_url"]) ) $_POST["event_booking_url"] = "";
    if ( empty($_POST["event_address"]) ) $_POST["event_address"] = "";
        $sxe = new SimpleXMLElement("<event></event>");
            $sxe->addChild('event_social_sharing', $_POST["event_social_sharing"] );
            $sxe->addChild('event_start_time', $_POST["event_start_time"] );
            $sxe->addChild('event_end_time', $_POST["event_end_time"] );
            $sxe->addChild('event_all_day', $_POST["event_all_day"] );
            $sxe->addChild('event_booking_url', $_POST["event_booking_url"] );
            $sxe->addChild('event_address', $_POST["event_address"] );
                $sxe = save_layout_xml($sxe);
        update_post_meta( $post_id, 'cs_event_meta', $sxe->asXML() );
}

Answer 1

替换

function events_meta_save($_POST, $post_id) {
    global $wpdb;
    if ( empty($_POST["event_social_sharing"]) ) $_POST["event_social_sharing"] = "";
    ....
    ....

与

function events_meta_save($_my_post, $post_id) {
    global $wpdb;
    if ( empty($_my_post["event_social_sharing"]) ) $_POST["event_social_sharing"] = "";
    ....
    ....

不要忘记用$_POST或任何其他名称替换条件中的所有$_my_post

原因，如其他答案所述：

您不能将$ _POST用作函数/方法参数

。这样做会尝试在符号表中重新分配变量。将此视为该语言的已保存关键字。将它放在函数签名中就像使用该语言的关键字作为变量名定义新变量一样。

Answer 2

@snjflame，您不需要使用$_POST作为函数的参数，因为它是超全局变量。您无法重新定义$_POST变量;你需要定义一个＆＃34; handler＆＃34;对于函数开头的$_POST变量，请在下面使用它。

例如：

<?php
    function events_meta_save( $post_id ) {
        global $wpdb;
        $post = $_POST;
        if ( empty($post["event_social_sharing"]) ) $post["event_social_sharing"] = "";
        if ( empty($post["event_start_time"]) ) $post["event_start_time"] = "";
        if ( empty($post["event_end_time"]) ) $post["event_end_time"] = "";
        if ( empty($post["event_all_day"]) ) $post["event_all_day"] = "";
        if ( empty($post["event_booking_url"]) ) $post["event_booking_url"] = "";
        if ( empty($post["event_address"]) ) $post["event_address"] = "";
        $sxe = new SimpleXMLElement("<event></event>");
            $sxe->addChild('event_social_sharing', $post["event_social_sharing"] );
            $sxe->addChild('event_start_time', $post["event_start_time"] );
            $sxe->addChild('event_end_time', $post["event_end_time"] );
            $sxe->addChild('event_all_day', $post["event_all_day"] );
            $sxe->addChild('event_booking_url', $post["event_booking_url"] );
            $sxe->addChild('event_address', $post["event_address"] );
        $sxe = save_layout_xml($sxe);
        update_post_meta( $post_id, 'cs_event_meta', $sxe->asXML() );
    }
?>

Wordpress主题错误“致命错误：无法重新分配自动全局变量_POST”

2 个答案: