[英]PHP class: Unable to access array in another function
I tried a lot of search but unable to figure out why array $wordlinks in function DoWordLink is not carrying values from function __construct. 我尝试了很多搜索,但无法弄清楚为什么函数DoWordLink中的数组$ wordlinks没有携带函数__construct的值。 PHP class code as below: PHP类代码如下:
<?php
class autolinkkeyword
{
public $wordlinks = array();
public function __construct(){
$query = mysql_query("SELECT keyword FROM library");
while ($row = mysql_fetch_array($query))
{
$this->wordlinks [$row["keyword"]] = $row["keyword"];
}
}
public function linkkeywords ($posts)
{
function DoWordLink($match)
{
$rpl=$match[1];
if(isset($wordlinks[$rpl]))
{
$kword = $this->wordlinks[$rpl];
$rpl="<a class=\"keyword_link\" href=\"#\" onclick=\"popup('popUpDiv');
ajax_loadContent('kword', 'library.php?keyword=$kword')\">$kword</a>";
unset($this->wordlinks[$match[1]]);
}
return $rpl;
}
$wl=array_keys($this->wordlinks);
$pm="/((?<=\s|^)(?:" . implode('|',$wl) .")(?=\.|\!|\?|\,|\'|\s|$))/im";
foreach($posts as $key => $mainbody)
{
$mainbody=preg_replace_callback($pm, 'DoWordLink', $mainbody) ;
echo $mainbody;
}
}
}
?>
aren't you missing a "this->" construct here? 你不是错过了这个“this->”构造吗? if(isset($this->wordlinks[$rpl]))
You can make it an actual method of that class and call it using this method: http://www.php.net/manual/en/language.pseudo-types.php#language.types.callback like: 你可以使它成为该类的实际方法,并使用此方法调用它: http : //www.php.net/manual/en/language.pseudo-types.php#language.types.callback like:
preg_replace_callback($pm, array($this, 'DoWordLink'), $mainbody);
Change DoWordLink function so it is part of the class like: 更改DoWordLink函数,使其成为类的一部分,如:
class autolinkkeyword
{
function DoWordLink($match)
{
$rpl=$match[1];
if(isset($this->wordlinks[$rpl]))
{
$kword = $this->wordlinks[$rpl];
$rpl="<a class=\"keyword_link\" href=\"#\" onclick=\"popup('popUpDiv');
ajax_loadContent('kword', 'library.php?keyword=$kword')\">$kword</a>";
unset($this->wordlinks[$match[1]]);
}
return $rpl;
}
}
在你引用$ wordlinks的任何地方使用$ this。
$this->wordlinks
You need to access the property in your linkkeywords
-method with the object-accessor, too! 你需要使用object-accessor访问linkkeywords
-method中的属性!
public function linkkeywords ($posts)
{
// Here use $this->wordlinks not $wordlinks
}
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