php phpexplode：使用空格作为分隔符将字符串拆分为单词
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php explode: split string into words by using space a delimiter
提问by Haradzieniec
$str = "This is a string";
$words = explode(" ", $str);
Works fine, but spaces still go into array:
工作正常，但空格仍然进入数组：
$words === array ('This', 'is', 'a', '', '', '', 'string');//true
I would prefer to have words only with no spaces and keep the information about the number of spacesseparate.
我宁愿只有没有空格的单词，并将有关空格数的信息分开。
$words === array ('This', 'is', 'a', 'string');//true
$spaces === array(1,1,4);//true
Just added: (1, 1, 4)means one space after the first word, one space after the second word and 4 spaces after the third word.
刚加：(1, 1, 4)表示第一个词后一个空格，第二个词后一个空格，第三个词后4个空格。
Is there any way to do it fast?
有什么办法可以快速做到吗？
Thank you.
谢谢你。
回答by Alma Do
For splitting the String into an array, you should use preg_split:
要将字符串拆分为数组，您应该使用preg_split：
$string = 'This is a string';
$data = preg_split('/\s+/', $string);
Your second part (counting spaces):
您的第二部分（计算空格）：
$string = 'This is a string';
preg_match_all('/\s+/', $string, $matches);
$result = array_map('strlen', $matches[0]);// [1, 1, 4]
回答by Raj
$financialYear = 2015-2016;
$financialYear = 2015-2016;
$test = explode('-',$financialYear);
echo $test[0]; // 2015
echo $test[1]; // 2016
回答by nickb
Here is one way, splitting the string and running a regex once, then parsing the results to see which segments were captured as the split (and therefore only whitespace), or which ones are words:
这是一种方法，拆分字符串并运行一次正则表达式，然后解析结果以查看哪些段被捕获为拆分（因此只有空格），或者哪些是单词：
$temp = preg_split('/(\s+)/', $str, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
$spaces = array();
$words = array_reduce( $temp, function( &$result, $item) use ( &$spaces) {
if( strlen( trim( $item)) === 0) {
$spaces[] = strlen( $item);
} else {
$result[] = $item;
}
return $result;
}, array());
You can see from this demothat $wordsis:
你可以从这个演示中看到$words：
Array
(
[0] => This
[1] => is
[2] => a
[3] => string
)
And $spacesis:
并且$spaces是：
Array
(
[0] => 1
[1] => 1
[2] => 4
)
回答by silkfire
You can use preg_split()for the first array:
您可以preg_split()用于第一个数组：
$str = 'This is a string';
$words = preg_split('#\s+#', $str);
And preg_match_all()for the $spacesarray:
而preg_match_all()对于$spaces数组：
preg_match_all('#\s+#', $str, $m);
$spaces = array_map('strlen', $m[0]);
回答by Ahmar Ali
Another way to do it would be using foreach loop.
另一种方法是使用 foreach 循环。
$str = "This is a string";
$words = explode(" ", $str);
$spaces=array();
$others=array();
foreach($words as $word)
{
if($word==' ')
{
array_push($spaces,$word);
}
else
{
array_push($others,$word);
}
}
回答by Haradzieniec
Here are the results of performance tests:
以下是性能测试的结果：
$str = "This is a string";
var_dump(time());
for ($i=1;$i<100000;$i++){
//Alma Do Mundo - the winner
$rgData = preg_split('/\s+/', $str);
preg_match_all('/\s+/', $str, $rgMatches);
$rgResult = array_map('strlen', $rgMatches[0]);// [1,1,4]
}
print_r($rgData); print_r( $rgResult);
var_dump(time());
for ($i=1;$i<100000;$i++){
//nickb
$temp = preg_split('/(\s+)/', $str, -1,PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
$spaces = array();
$words = array_reduce( $temp, function( &$result, $item) use ( &$spaces) {
if( strlen( trim( $item)) === 0) {
$spaces[] = strlen( $item);
} else {
$result[] = $item;
}
return $result;
}, array());
}
print_r( $words); print_r( $spaces);
var_dump(time());
int(1378392870) Array ( [0] => This [1] => is [2] => a [3] => string ) Array ( [0] => 1 [1] => 1 [2] => 4 ) int(1378392871) Array ( [0] => This [1] => is [2] => a [3] => string ) Array ( [0] => 1 [1] => 1 [2] => 4 ) int(1378392873)
int(1378392870) Array ( [0] => This [1] => is [2] => a [3] => string ) Array ( [0] => 1 [1] => 1 [2] => 4 ) int(1378392871) 数组 ( [0] => 这个 [1] => 是 [2] => a [3] => 字符串) 数组 ( [0] => 1 [1] => 1 [2] => 4 ) int(1378392873)
