正则表达式删除ref标签php

Question

输入字符串：

<ref> Hi this one to be rmoved} {{sdjfhk arbit shit}} [whatever] </ref> But this one to be preserved. <ref> again this has to be removed. </ref>

输出字符串：

But this one to be preserved.

我试过：$str = preg_replace('/^<ref.*?ref>$/', '', $str);

Answer 1

你非常接近。您只想删除^和$个字符。

$str = '<ref> Hi this one to be rmoved} {{sdjfhk arbit shit}} [whatever] </ref> But this one to be preserved. <ref> again this has to be removed. </ref>';

print preg_replace('/<ref.*?ref>/', '', $str);
//=> But this one to be preserved.

See it working here on tehplayground.com

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旁注：由于您正在寻找HTML标记，因此技术上应该使用DOM解析器。

PHP Simple HTML DOM Parser非常适合这种任务：）