将一段html中的所有
替换成这样
...
回复讨论(解决方案)
改成这样还怎么渲染?( 之类的? 改成这样还怎么渲染?( 之类的? 这替换标签里面的内容,用的是javascript(jQuery)吧。 这替换标签里面的内容,用的是javascript(jQuery)吧。 两位都很牛啊, preg_replace_callback好象可以连接字符串return 'str'.$i++;
只是举例,就是类似这样的标签快速替换
$html = "
将html中所有的 "abc" 字符
替换成
"1"
"2"
"3"
...
即:$html = "
额,替换后 我还要存到数据库的。所以是在后台PHP替换的啊。 $html = "<div>abc,abc,abc,<span>abc</span>,......</div>";echo preg_replace('/abc/e','++$i',$html);
$str = '<div>abc,abc,abc</div><span>abc</span>';$i=1;$newstr = preg_replace_callback('|abc|', function($match) use(&$i){return $i++;}, $str);echo $newstr;
preg_replace可以连接不?
'str ++$i str'会报错
$html = "<div>abc,abc,abc,<span>abc</span>,......</div>";echo preg_replace('/abc/e','++$i',$html);
echo preg_replace('/abc/e','"str".++$i',$html);
我一直也怀疑是这2个函数,但一直没找到你们这样的用法。。。。
分给你们啦!

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PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

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PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

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PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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