Word to array php

(PHP 5, PHP 7, PHP 8)

str_splitConvert a string to an array

Description

str_split(string $string, int $length = 1): array

Parameters

string

The input string.

length

Maximum length of the chunk.

Return Values

If the optional length parameter is
specified, the returned array will be broken down into chunks with each
being length in length, except the final chunk
which may be shorter if the string does not divide evenly. The default
length is 1, meaning every chunk will be one byte in size.

Errors/Exceptions

If length is less than 1,
a ValueError will be thrown.

Changelog

Version Description
8.2.0 If string is empty an empty array is now returned.
Previously an array containing a single empty string was returned.
8.0.0 If length is less than 1,
a ValueError will be thrown now;
previously, an error of level E_WARNING
has been raised instead, and the function returned false.

Examples

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);?>

The above example will output:

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
)

Notes

Note:

str_split() will split into bytes, rather than characters when dealing with a multi-byte encoded string.
Use mb_str_split() to split the string into code points.

See Also

  • mb_str_split() — Given a multibyte string, return an array of its characters
  • 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

Julian

2 months ago


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:

<?phparray(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. "
}?>


alex-glebe at mail dot ru

3 months ago


Empty string Does'n returns Empty array!

$arr0 = str_split("");
print_r($arr0);

Array
(
    [0] =>
)


lskatz at gmail dot com

14 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;

}

?>


str_split

(PHP 5, PHP 7)

str_splitПреобразует строку в массив

Описание

array str_split
( string $string
[, int $split_length = 1
] )

Список параметров

string

Входная строка.

split_length

Максимальная длина фрагмента.

Возвращаемые значения

Если указан необязательный аргумент split_length,
возвращаемый массив будет содержать части исходной строки длиной
split_length каждая, иначе каждый элемент
будет содержать один символ.

Если split_length меньше 1, возвращается
FALSE. Если split_length больше длины строки
string, то вся строка будет возвращена в первом и
единственном элементе массива.

Примеры

Пример #1 Пример использования str_split()


<?php

$str 

"Hello Friend";$arr1 str_split($str);
$arr2 str_split($str3);print_r($arr1);
print_r($arr2);?>

Результат выполнения данного примера:

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
)

Примечания

Замечание:

Функция str_split() производит разбивку по байтам,
а не по символам, в случае использования строк в многобайтных кодировках.

Смотрите также

  • chunk_split() — Разбивает строку на фрагменты
  • preg_split() — Разбивает строку по регулярному выражению
  • explode() — Разбивает строку с помощью разделителя
  • count_chars() — Возвращает информацию о символах, входящих в строку
  • str_word_count() — Возвращает информацию о словах, входящих в строку
  • for

Вернуться к: Обработка строк

Depending on your full requirements and if you need the string array unmodified too, you could use explode for this, something like this would get your words into an array:

$str = "hey hello man are you going to write some code";
$str_arr = explode(' ', $str);

Then you can use array_filter to remove the words you don’t want, like so:

function min4char($word) {
    return strlen($word) >= 4;
}
$final_str_array = array_filter($str_arr, 'min4char');

Otherwise if you don’t need the unmodified array, you can use a regular expression to get all matches that are above a certain length using preg_match_all, or replace out the ones that are using preg_replace.

One final option would be to do it the basic way, use explode to get your array as per the first code example, and then loop over everything using unset to remove the entry from the array. But then, you’d also need to reindex (depending on your subsequent usage of the ‘fixed’ array), which could be inefficient depending on how large your array is.

EDIT: Not sure why there are claims that it does not work, see below for output of var_dump($final_str_array):

array(5) { [1]=> string(5) "hello" [5]=> string(5) "going" [7]=> string(5) "write" [8]=> string(4) "some" [9]=> string(4) "code" } 

@OP, to convert this back to your string, you can simply call implode(' ', $final_str_array) to get this output:

hello going write some code

Примеры преобразования строк текста в массив по разным разделителям.

1

Разделить текст по переносам строк

$text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. 
Proin blandit magna eu tempus ullamcorper.
Sed porta justo sed nibh elementum condimentum. 
Quisque non eros sit amet elit commodo maximus eget a eros.";

$array = explode("n", $text);
print_r($array);

PHP

Результат:

Array
(
    [0] => Lorem ipsum dolor sit amet, consectetur adipiscing elit. 
    [1] => Proin blandit magna eu tempus ullamcorper.
    [2] => Sed porta justo sed nibh elementum condimentum. 
    [3] => Quisque non eros sit amet elit commodo maximus eget a eros.
)

2

Разделить текст по предложениям

$text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin blandit 
magna eu tempus ullamcorper! Sed porta justo sed nibh elementum condimentum. 
Quisque non eros sit amet elit commodo maximus eget a eros?";

$text = str_replace("n", '', $text);
$array = preg_split('/(?<=[.?!])s+(?=[a-zа-яё])/i', $text);
print_r($array);

PHP

Результат:

Array
(
    [0] => Lorem ipsum dolor sit amet, consectetur adipiscing elit.
    [1] => Proin blandit magna eu tempus ullamcorper!
    [2] => Sed porta justo sed nibh elementum condimentum.
    [3] => Quisque non eros sit amet elit commodo maximus eget a eros?
)

3

Разделить текст по словам

$text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin blandit magna eu tempus ullamcorper.";

$text = preg_replace("/[^a-zа-яё0-9s]/i", '', $text);
$array = preg_split('/(s)/', $text);
$array = array_diff($array, array(''));

print_r($array);

PHP

Результат:

Array
(
    [0] => Lorem
    [1] => ipsum
    [2] => dolor
    [3] => sit
    [4] => amet
    [5] => consectetur
    [6] => adipiscing
    [7] => elit
    [8] => Proin
    [9] => blandit
    [10] => magna
    [11] => eu
    [12] => tempus
    [13] => ullamcorper
)

4

Разделить текст по буквам

$text = "Lorem ipsum dolor sit amet";

$array = str_split($text);

print_r($array);

PHP

Результат:

Array
(
    [0] => L
    [1] => o
    [2] => r
    [3] => e
    [4] => m
    [5] =>  
    [6] => i
    [7] => p
    [8] => s
    [9] => u
    [10] => m
    [11] =>  
    [12] => d
    [13] => o
    [14] => l
    [15] => o
    [16] => r
    [17] =>  
    [18] => s
    [19] => i
    [20] => t
    [21] =>  
    [22] => a
    [23] => m
    [24] => e
    [25] => t
)

5

Разделить текст по нескольким разделителям

Разделители - и :

$text = "Lorem ipsum dolor sit amet-proin blandit magna eu:Sed porta justo.";

$array = preg_split('/[-|:]/u', $text, -1, PREG_SPLIT_NO_EMPTY);

print_r($array);

PHP

Результат:

Array
(
    [0] => Lorem ipsum dolor sit amet
    [1] => proin blandit magna eu
    [2] => Sed porta justo.
)

Если разделитель из нескольких символов, например <br> и </br>:

$text = "Lorem ipsum dolor sit amet,<br>proin blandit magna eu.</br>Sed porta justo.";

$array = preg_split('/(<br>)|(</br>)/u', $text, -1, PREG_SPLIT_NO_EMPTY);

print_r($array);

PHP

Результат:

Array
(
    [0] => Lorem ipsum dolor sit amet,
    [1] => proin blandit magna eu.
    [2] => Sed porta justo.
)

6

Разделить текст на равные части

$text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin blandit magna eu tempus ullamcorper.";

$chunks = 10;
$array = str_split($text);
$chunks = array_chunk($array, $chunks, false);
$result = array();
foreach ($chunks as $chunk) {
	 $result[] = implode($chunk);
}

print_r($result);

PHP

Результат:

Array
(
    [0] => Lorem ipsu
    [1] => m dolor si
    [2] => t amet, co
    [3] => nsectetur 
    [4] => adipiscing
    [5] =>  elit. Pro
    [6] => in blandit
    [7] =>  magna eu 
    [8] => tempus ull
    [9] => amcorper.
)

27.12.2020, обновлено 05.04.2022

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WHAT IS THE SYNTAX OF THE STR_SPLIT()FUNCTION IN PHP?

str_split(string,length)
Parameter Description
string Required. Specifies the string to split
length Optional. Specifies the length of each array element. Default is 1
PHP STR_SPLIT() method

EXAMPLES OF THE STR_SPLIT() FUNCTION

Example 1. In this example, we split the string “Hello” into an array.

<?php
print_r(str_split("Hello"));
?>

Example 2. In this example, we use the length parameter.

<?php
print_r(str_split("Hello",3));
?>

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