


PHP uses the preg_split function to split strings containing newlines and semicolons
This article mainly introduces the use of preg_split function in PHP to split strings containing newlines and semicolons. It has certain reference value. Now I share it with you. Friends in need can refer to it
preg_ split() Function is used to split strings using regular expressions. Its main difference from the <span class="hljs-keyword" style="color:rgb(167,29,93);">split</span>()
and explode()
functions is:
<span class="hljs-keyword" style="color:rgb(167,29,93);">split</span>()
Function: Use regular expressions to split the string and return an array, if an error occurs, <span class="hljs-literal" style="color:rgb(0,134,179);">false</span>
.
preg_split()
Function : Uses Perl-compatible regular expression syntax, usually faster than <span class="hljs-keyword" style="color:rgb(167,29,93);">split</span>()
.
explode()
Function: Use one string to split another string, usually faster than the above two functions.
<span class="hljs-attribute" style="color:rgb(0,134,179);">preg_</span> split()
The syntax of the function is:
array preg_split( string pattern, string subject [, int limit [, int flags]] )
Parameter description:
Parameters | Description |
---|---|
pattern | Regular expression |
subject | Objects that need to be matched for splitting |
limit | Optional, if specified <span class="hljs-built_in">limit</span> , then at most <span class="hljs-built_in">limit</span> substrings will be returned, if <span class="hljs-built_in">limit</span> is <span class="hljs-deletion" style="color:rgb(189,44,0);background-color:rgb(255,236,236);">-1</span> means there is no limit and can be used to continue specifying optional parameters flags |
flags | Settings <span class="hljs-built_in">limit</span> is optional after <span class="hljs-deletion" style="color:rgb(189,44,0);background-color:rgb(255,236,236);">-1</span> , and can be any combination of the following tags (combined with the bitwise OR operator |):
|
这样,我们就有了按换行符和分号分割字符串的方法了。
$result = preg_split('/[;\r\n]+/s', $value); // 返回数据保存在$result数组中
其中:
\r 表示:回车符(ACSII:13
或0x0d
),就是我们常说的硬回车。
\n 表示:换行(ACSII:10
或0x0a
),就是我们常说的软回车。
分号就不用说了吧:)
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