数组到字符串的转换 [英] Array to string conversion

问题描述

此代码有什么问题?我不明白这是错误代码:

What's the problem of this code? I don't get it. This is the error code:

注意:数组到字符串的转换第12行数组上的C:\ xampp \ htdocs \ stage \ ripper.php引用

Notice: Array to string conversion in C:\xampp\htdocs\stage\ripper.php on line 12 Array Blockquote

注意:C:\ xampp \ htdocs \ stage \ ripper.php中的数组到字符串的转换在第13行数组上

Notice: Array to string conversion in C:\xampp\htdocs\stage\ripper.php on line 13 Array

<?php
header('Content-Type: text/html; charset=utf-8');

$url = "http://www.asaphshop.nl/epages/asaphnl.sf/nl_NL/ObjectPath=/Shops/asaphnl/Products/80203122";
$htmlcode = file_get_contents($url);
$pattern = "/itemprop=\"description\"\>(.*)\<\/div\>(.*)\<li\>Taal:(.*)\<\/li\>(.*)\>(.*)\<\/div\>\<li\>(.*)\data-src-l\<\/li\>/sU";
preg_match_all($pattern, $htmlcode, $matches);
Print_r ($matches);
$description =($matches[1]);
$language = ($matches[3]);
echo $description;
echo $language
?>

推荐答案

使用 preg_match_all 时， $ matches 是二维数组.因此， $ matches [1] 和 $ matches [3] 都是数组. echo 仅适用于数字或字符串，因此当您尝试回显数组时会收到警告.如果要查看其中的内容，请使用 print_r()或 var_dump():

When you use preg_match_all, $matches is a 2-dimensional array. So $matches[1] and $matches[3] are both arrays. echo only works with numbers or strings, so you get a warning when you try to echo an array. If you want to see what's in them, use print_r() or var_dump():

print_r($description);
print_r($language);

这篇关于数组到字符串的转换的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！