$str = "This is a string";
$words = explode(" ", $str);
Works fine, but spaces still go into array:
工作很好,但空间仍然进入数组:
$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 spaces separate.
我宁愿只使用没有空格的单词,并保留有关空格的信息。
$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.
(1、1、4)是指在第一个单词后的一个空格,第二个单词后面有一个空格,第三个单词后面有四个空格。
Is there any way to do it fast?
有什么方法可以快速完成吗?
Thank you.
谢谢你!
6 个解决方案
#1
24
For splitting the String into an array, you should use preg_split:
要将字符串分割为数组,应该使用preg_split:
$string = 'This is a string';
$data = preg_split('/\s+/', $string);
Your second part (counting spaces):
你的第二部分(计算空间):
$string = 'This is a string';
preg_match_all('/\s+/', $string, $matches);
$result = array_map('strlen', $matches[0]);// [1, 1, 4]
#2
5
$financialYear = 2015-2016;
financialYear = 2015 - 2015美元;
$test = explode('-',$financialYear);
echo $test[0]; // 2015
echo $test[1]; // 2016
#3
2
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:
这里有一种方法,拆分字符串并运行regex一次,然后解析结果,以查看哪些段被捕获为拆分(因此只有空格),或者哪些部分是单词:
$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 demo that $words
is:
你可以从这个演示中看到$words是:
Array
(
[0] => This
[1] => is
[2] => a
[3] => string
)
And $spaces
is:
空间是:美元
Array
(
[0] => 1
[1] => 1
[2] => 4
)
#4
1
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);
}
}
#5
1
You can use preg_split()
for the first array:
您可以对第一个数组使用preg_split():
$str = 'This is a string';
$words = preg_split('#\s+#', $str);
And preg_match_all()
for the $spaces
array:
$spaces数组的preg_match_all():
preg_match_all('#\s+#', $str, $m);
$spaces = array_map('strlen', $m[0]);
#6
0
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数组(1378392870)([0]= >[1]= >[2]= >[3]= >字符串)数组([0]= > 1[1]= > 1[2]= > 4)int数组(1378392871)([0]= >[1]= >[2]= >[3]= >字符串)数组([0]= > 1[1]= > 1[2]= > 4)int(1378392873)
#1
24
For splitting the String into an array, you should use preg_split:
要将字符串分割为数组,应该使用preg_split:
$string = 'This is a string';
$data = preg_split('/\s+/', $string);
Your second part (counting spaces):
你的第二部分(计算空间):
$string = 'This is a string';
preg_match_all('/\s+/', $string, $matches);
$result = array_map('strlen', $matches[0]);// [1, 1, 4]
#2
5
$financialYear = 2015-2016;
financialYear = 2015 - 2015美元;
$test = explode('-',$financialYear);
echo $test[0]; // 2015
echo $test[1]; // 2016
#3
2
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:
这里有一种方法,拆分字符串并运行regex一次,然后解析结果,以查看哪些段被捕获为拆分(因此只有空格),或者哪些部分是单词:
$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 demo that $words
is:
你可以从这个演示中看到$words是:
Array
(
[0] => This
[1] => is
[2] => a
[3] => string
)
And $spaces
is:
空间是:美元
Array
(
[0] => 1
[1] => 1
[2] => 4
)
#4
1
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);
}
}
#5
1
You can use preg_split()
for the first array:
您可以对第一个数组使用preg_split():
$str = 'This is a string';
$words = preg_split('#\s+#', $str);
And preg_match_all()
for the $spaces
array:
$spaces数组的preg_match_all():
preg_match_all('#\s+#', $str, $m);
$spaces = array_map('strlen', $m[0]);
#6
0
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数组(1378392870)([0]= >[1]= >[2]= >[3]= >字符串)数组([0]= > 1[1]= > 1[2]= > 4)int数组(1378392871)([0]= >[1]= >[2]= >[3]= >字符串)数组([0]= > 1[1]= > 1[2]= > 4)int(1378392873)