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 — Convert a string to an array
Descrierea
str_split
( string
$string
, int $length = 1
) : arrayConverts a string to an array.
Parametri
-
string -
The input string.
-
length -
Maximum length of the chunk.
Valorile întoarse
If the optional length parameter is
specified, the returned array will be broken down into chunks with each
being length in length, otherwise each chunk
will be one character in length.
false is returned if length is less than 1.
If the length length exceeds the length of
string, the entire string is returned as the first
(and only) array element.
Exemple
Example #1 Example uses of str_split()
<?php
$str = "Hello Friend";
$arr1 = str_split($str);
$arr2 = str_split($str, 3);
print_r($arr1);
print_r($arr2);
?>
Exemplul de mai sus va afișa:
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
)
Note
Notă:
str_split() will split into bytes, rather than characters when dealing with a multi-byte encoded string.
A se vedea și
- chunk_split() - Split a string into smaller chunks
- preg_split() - Split string by a regular expression
- explode() - Split a string by a string
- count_chars() - Return information about characters used in a string
- str_word_count() - Return information about words used in a string
- 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] =>
)
