The function str_split() is not 'aware' of words. Here is an adaptation of str_split() that is 'word-aware'.
<?php
$array = str_split_word_aware(
'In the beginning God created the heaven and the earth. And the earth was without form, and void; and darkness was upon the face of the deep.',
32
);
var_dump($array);
/**
* This function is similar to str_split() but this function keeps words intact; it never splits through a word.
*
* @return array<int, string>
*/
function str_split_word_aware(string $string, int $maxLengthOfLine): array
{
if ($maxLengthOfLine <= 0) {
throw new RuntimeException(sprintf('The function %s() must have a max length of line at least greater than one', __FUNCTION__));
}
$lines = [];
$words = explode(' ', $string);
$currentLine = '';
$lineAccumulator = '';
foreach ($words as $currentWord) {
$currentWordWithSpace = sprintf('%s ', $currentWord);
$lineAccumulator .= $currentWordWithSpace;
if (strlen($lineAccumulator) < $maxLengthOfLine) {
$currentLine = $lineAccumulator;
continue;
}
$lines[] = $currentLine;
// Overwrite the current line and accumulator with the current word
$currentLine = $currentWordWithSpace;
$lineAccumulator = $currentWordWithSpace;
}
if ($currentLine !== '') {
$lines[] = $currentLine;
}
return $lines;
}
?>
OUTPUT:
<?php
array(5) {
[0]=> string(29) "In the beginning God created "
[1]=> string(30) "the heaven and the earth. And "
[2]=> string(28) "the earth was without form, "
[3]=> string(27) "and void; and darkness was "
[4]=> string(27) "upon the face of the deep. "
}
?>
str_split
(PHP 5, PHP 7)
str_split — 문자열을 배열로 변환
설명
array str_split
( string
$string
[, int $split_length
] )문자열을 배열로 변환합니다.
인수
-
string -
입력 문자열.
-
split_length -
조각의 최대 길이.
반환값
선택적인 split_length 인수를 지정하면, 반환하는
배열은 split_length 길이의 원소로 나누어집니다.
지정하지 않으면 하나의 원소에 한 문자가 들어갑니다.
split_length가 1보다 작을 경우에는 FALSE를
반환합니다. split_length 길이가
string의 길이보다 클 경우, 문자열 전체를 첫번째
배열 원소로 반환합니다.
예제
Example #1 str_split() 용례
<?php
$str = "Hello Friend";
$arr1 = str_split($str);
$arr2 = str_split($str, 3);
print_r($arr1);
print_r($arr2);
?>
위 예제의 출력:
Array
(
[0] => H
[1] => e
[2] => l
[3] => l
[4] => o
[5] =>
[6] => F
[7] => r
[8] => i
[9] => e
[10] => n
[11] => d
)
Array
(
[0] => Hel
[1] => lo
[2] => Fri
[3] => end
)
참고
- chuck_split()
- preg_split() - 정규 표현식에 따라 문자열을 나눔
- explode() - 문자열을 문자열로 나눕니다
- count_chars() - 문자열 안에 사용한 문자에 대한 정보를 반환
- str_word_count() - 문자열에서 사용한 단어에 대한 정보를 반환
- for
add a note
User Contributed Notes 3 notes
Julian ¶
1 year ago
lskatz at gmail dot com ¶
15 years ago
A good use of str_split is reverse translating an amino acid sequence.
<?php
/* reverse translate an aa sequence using its dna counterpart */
function reverseTranslate($aaSeq,$ntSeq){
$nt=str_split($ntSeq,3);
$aa=str_split($aaSeq,1);
$gapChar=array('*','-');
$numAa=count($aa);
$ntIndex=0;
$newNtSeq="";
for($i=0;$i<$numAa;$i++){
// if the aa is a gap, then just put on a gap character
if(in_array($aa[$i],$gapChar)){
$newNtSeq.='---';
}
else{
$newNtSeq.=$nt[$ntIndex];
$ntIndex++;
}
}
return $newNtSeq;
}
?>
alex-glebe at mail dot ru ¶
1 year ago
Empty string Does'n returns Empty array!
$arr0 = str_split("");
print_r($arr0);
Array
(
[0] =>
)
