是否可以为爆炸功能设置3个分隔符

Option 1 (spaces)

选项1(空格)

keyword keyword keyword

Option 2 (line breaks)

选项2(换行符)

keyword
keyword
keyword

Option 3 (commas)

选项3(逗号)

keyword, keyword, keyword

Or would I have to use the split function instead? And if so, how?

或者我是否必须使用拆分功能?如果是这样,怎么样?

3 个解决方案

#1

Try using preg_split but notice that this will explode on all of your examples at once.

尝试使用preg_split但请注意,这会立即在所有示例上爆炸。

$parts = preg_split("/[ ,\n]/", $string);

Edit: For the third example you give you'll get empty array elements as it's being split on both the comma and the space. Pass $parts through array_filter() to strip these out.

编辑:对于第三个示例,您将获得空数组元素,因为它在逗号和空格上分开。通过array_filter()传递$ parts以去除它们。

#2

Not as simple as preg_split, but strtok() is also an option

不像preg_split那么简单,但strtok()也是一个选项

#3

str_word_count() for the win!

This task does not require variable delimiters or regex - assuming all of these "keywords" are "words"...

此任务不需要变量分隔符或正则表达式 - 假设所有这些“关键字”都是“单词”...

Code: (Demo)

$strings=[
    'keyword keyword keyword',
    'keyword
keyword
keyword',
    'keyword, keyword, keyword'
];
foreach($strings as $string){
    var_export(str_word_count($string,1));
    echo "\n";
}

Output:

array (
  0 => 'keyword',
  1 => 'keyword',
  2 => 'keyword',
)
array (
  0 => 'keyword',
  1 => 'keyword',
  2 => 'keyword',
)
array (
  0 => 'keyword',
  1 => 'keyword',
  2 => 'keyword',
)