我做了一些工作，我从Google API搜索结果片段中获取了一个字符串。在此字符串中包含<b>和</b>这会产生进一步工作的问题，因此我需要删除<b>和</b>
主要字符串代码：
$content_all .="#$*@#" . $json->responseData->results[$x]->content;
我尝试使用此代码后删除<b>和</b>：
$content_all=(string)$content_all;
str_replace("<b>", " ", $content_all);
str_replace("</b>", " ", $content_all);
但不会删除<b>和</b>。
我试过了
str_replace("hello", " ", "Hello people");
这很有用。但是为什么它不适用于$content_all刺痛。
我写了$ content_all的值，它看起来像这样
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somehow Music video by We The Kings performing <b>Sad Song</b> ...#$*@#Nov 12, 2015 <b>...</b> There's nothing like a <b>sad</b>, slow <b>song</b> to aid in a postbreakup cry or to be the
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答案 0 :(得分：6)
如果要从字符串中删除html标记，可以使用strip_tags（）
例如：
<?php
echo strip_tags("Hello <b>world!</b>");//Hello world
?>
小心strip_tag将删除字符串中的所有标记。
参考http://www.w3schools.com/php/func_string_strip_tags.asp。
如果您使用str_replace("<b>", " ", $content_all);，还会产生不必要的空间
ie:str_replace("<b>", " ", "hi <br><br> vig");
result: hi vig
答案 1 :(得分：5)
你必须这样做：
$content_all=str_replace("<b>", " ", $content_all);
$content_all=str_replace("</b>", " ", $content_all);
echo $content_all;
当然，最后一行只是一个回声，所以你可以看到结果。