chunk array by key gap

up vote
6
down vote

favorite

I have an array from array_diff function and it looks like below:

Array
(
 [0] => world
 [1] => is
 [2] => a
 [3] => wonderfull
 [5] => in
 [6] => our
)

As you can see we have a gap between 3 and 5 keys (Key # 4).
How can I split that array into 2 parts (may be more if the're more gaps).
So the final output will be:

Array
 (
 [0] => Array
 (
 [0] => world
 [1] => is
 [2] => a
 [3] => wonderfull
 )
 [1] => Array 
 (
 [0] => in
 [1] => our
 ) 
 )

Thanks!

asked 2 hours ago

user889349

1,35522341

1

how that gap length is determined. is it varying number or constant?
â€“Â prasanna puttaswamy
2 hours ago

1

It's a varying number
â€“Â user889349
2 hours ago

add a commentÂ |Â

up vote
6
down vote

favorite

I have an array from array_diff function and it looks like below:

Array
(
 [0] => world
 [1] => is
 [2] => a
 [3] => wonderfull
 [5] => in
 [6] => our
)

As you can see we have a gap between 3 and 5 keys (Key # 4).
How can I split that array into 2 parts (may be more if the're more gaps).
So the final output will be:

Array
 (
 [0] => Array
 (
 [0] => world
 [1] => is
 [2] => a
 [3] => wonderfull
 )
 [1] => Array 
 (
 [0] => in
 [1] => our
 ) 
 )

Thanks!

asked 2 hours ago

user889349

1,35522341

1

how that gap length is determined. is it varying number or constant?
â€“Â prasanna puttaswamy
2 hours ago

1

It's a varying number
â€“Â user889349
2 hours ago

add a commentÂ |Â

up vote
6
down vote

favorite

I have an array from array_diff function and it looks like below:

Array
(
 [0] => world
 [1] => is
 [2] => a
 [3] => wonderfull
 [5] => in
 [6] => our
)

As you can see we have a gap between 3 and 5 keys (Key # 4).
How can I split that array into 2 parts (may be more if the're more gaps).
So the final output will be:

Array
 (
 [0] => Array
 (
 [0] => world
 [1] => is
 [2] => a
 [3] => wonderfull
 )
 [1] => Array 
 (
 [0] => in
 [1] => our
 ) 
 )

Thanks!

asked 2 hours ago

user889349

1,35522341

I have an array from array_diff function and it looks like below:

Array
(
 [0] => world
 [1] => is
 [2] => a
 [3] => wonderfull
 [5] => in
 [6] => our
)

As you can see we have a gap between 3 and 5 keys (Key # 4).
How can I split that array into 2 parts (may be more if the're more gaps).
So the final output will be:

Array
 (
 [0] => Array
 (
 [0] => world
 [1] => is
 [2] => a
 [3] => wonderfull
 )
 [1] => Array 
 (
 [0] => in
 [1] => our
 ) 
 )

Thanks!

php array-difference

asked 2 hours ago

user889349

1,35522341

asked 2 hours ago

user889349

1,35522341

asked 2 hours ago

user889349

1,35522341

asked 2 hours ago

user889349

1,35522341

asked 2 hours ago

user889349

1,35522341

1

how that gap length is determined. is it varying number or constant?
â€“Â prasanna puttaswamy
2 hours ago

1

It's a varying number
â€“Â user889349
2 hours ago

add a commentÂ |Â

1

how that gap length is determined. is it varying number or constant?
â€“Â prasanna puttaswamy
2 hours ago

1

It's a varying number
â€“Â user889349
2 hours ago

how that gap length is determined. is it varying number or constant?
â€“Â prasanna puttaswamy
2 hours ago

It's a varying number
â€“Â user889349
2 hours ago

add a commentÂ |Â

3 Answers
3

active

oldest

votes

up vote
5
down vote

accepted

You can use old_key,new_key concept to check that there difference is 1 or not? if not then create new index inside you result array otherwise add the values on same index:-

<?php

$arr = Array(0 => 'world',1 => 'is',2 => 'a',3 => 'wonderfull',5 => 'in',6 => 'our');

$new_array = ;
$old_key = -1;
$i = 0;
foreach($arr as $key=>$val)
 if(($key-$old_key) ==1)
 $new_array[$i] = $val;
 $old_key = $key;
 
 if(($key-$old_key) >1)
 $i++;
 $new_array[$i] = $val;
 $old_key = $key;
 

print_r($new_array);

https://3v4l.org/Yl9rp

answered 2 hours ago

Alive to Die

54.5k82767

add a commentÂ |Â

up vote
2
down vote

This should also work -

$arr = [
 0 => 'world',
 1 => 'is',
 2 => 'a',
 3 => 'wonderfull',
 5 => 'in',
 6 => 'our',
];
// Extract keys
$keys = array_keys($arr);
// Generate expected keys
$temp = range($keys[0], end($keys));
// Find missing keys
$missing = array_diff($temp, $keys);
// Fetch first missing keys
$missing = array_shift($missing);
// Split array depending on missing key
$final = array_chunk($arr, $missing);

var_dump($final);

Output

array(2) 
 [0]=>
 array(4) 
 [0]=>
 string(5) "world"
 [1]=>
 string(2) "is"
 [2]=>
 string(1) "a"
 [3]=>
 string(10) "wonderfull"
 
 [1]=>
 array(2) 
 [0]=>
 string(2) "in"
 [1]=>
 string(3) "our"

answered 2 hours ago

Sougata Bose

26.2k43061

1

It's worth noting this works if you only expect to have a single gap. If you have a second gap, they're not added to a third chunk. [Edit: And if the first chunk is longer than the second.]
â€“Â EPB
2 hours ago

@EPB is right. check here:-3v4l.org/1iVRg And result through my code:- 3v4l.org/aikEW
â€“Â Alive to Die
1 hour ago

add a commentÂ |Â

up vote
1
down vote

You can make use of the array internal pointer to traverse the array.

<?php
$arr = Array(0=>"world",1=>"is",2=>"a",3=>"wonderfull",5=>"in",6=>"our");
print_r($arr);

$result = Array();
$lastkey;
while($word = current($arr))

 $key = key($arr);
 if(isset($lastkey) && $key == $lastkey + 1)
 
 $result[count($result) - 1] = $word;
 
 else
 
 $result = Array($word);
 
 $lastkey = $key;
 next($arr);

print_r($result);
?>

answered 2 hours ago

Ricky Mo

94515

add a commentÂ |Â

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3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

up vote
5
down vote

accepted

You can use old_key,new_key concept to check that there difference is 1 or not? if not then create new index inside you result array otherwise add the values on same index:-

<?php

$arr = Array(0 => 'world',1 => 'is',2 => 'a',3 => 'wonderfull',5 => 'in',6 => 'our');

$new_array = ;
$old_key = -1;
$i = 0;
foreach($arr as $key=>$val)
 if(($key-$old_key) ==1)
 $new_array[$i] = $val;
 $old_key = $key;
 
 if(($key-$old_key) >1)
 $i++;
 $new_array[$i] = $val;
 $old_key = $key;
 

print_r($new_array);

https://3v4l.org/Yl9rp

answered 2 hours ago

Alive to Die

54.5k82767

add a commentÂ |Â

up vote
5
down vote

accepted

You can use old_key,new_key concept to check that there difference is 1 or not? if not then create new index inside you result array otherwise add the values on same index:-

<?php

$arr = Array(0 => 'world',1 => 'is',2 => 'a',3 => 'wonderfull',5 => 'in',6 => 'our');

$new_array = ;
$old_key = -1;
$i = 0;
foreach($arr as $key=>$val)
 if(($key-$old_key) ==1)
 $new_array[$i] = $val;
 $old_key = $key;
 
 if(($key-$old_key) >1)
 $i++;
 $new_array[$i] = $val;
 $old_key = $key;
 

print_r($new_array);

https://3v4l.org/Yl9rp

answered 2 hours ago

Alive to Die

54.5k82767

add a commentÂ |Â

up vote
5
down vote

accepted

You can use old_key,new_key concept to check that there difference is 1 or not? if not then create new index inside you result array otherwise add the values on same index:-

<?php

$arr = Array(0 => 'world',1 => 'is',2 => 'a',3 => 'wonderfull',5 => 'in',6 => 'our');

$new_array = ;
$old_key = -1;
$i = 0;
foreach($arr as $key=>$val)
 if(($key-$old_key) ==1)
 $new_array[$i] = $val;
 $old_key = $key;
 
 if(($key-$old_key) >1)
 $i++;
 $new_array[$i] = $val;
 $old_key = $key;
 

print_r($new_array);

https://3v4l.org/Yl9rp

answered 2 hours ago

Alive to Die

54.5k82767

You can use old_key,new_key concept to check that there difference is 1 or not? if not then create new index inside you result array otherwise add the values on same index:-

<?php

$arr = Array(0 => 'world',1 => 'is',2 => 'a',3 => 'wonderfull',5 => 'in',6 => 'our');

$new_array = ;
$old_key = -1;
$i = 0;
foreach($arr as $key=>$val)
 if(($key-$old_key) ==1)
 $new_array[$i] = $val;
 $old_key = $key;
 
 if(($key-$old_key) >1)
 $i++;
 $new_array[$i] = $val;
 $old_key = $key;
 

print_r($new_array);

https://3v4l.org/Yl9rp

answered 2 hours ago

Alive to Die

54.5k82767

answered 2 hours ago

Alive to Die

54.5k82767

answered 2 hours ago

Alive to Die

54.5k82767

answered 2 hours ago

Alive to Die

54.5k82767

add a commentÂ |Â

up vote
2
down vote

This should also work -

$arr = [
 0 => 'world',
 1 => 'is',
 2 => 'a',
 3 => 'wonderfull',
 5 => 'in',
 6 => 'our',
];
// Extract keys
$keys = array_keys($arr);
// Generate expected keys
$temp = range($keys[0], end($keys));
// Find missing keys
$missing = array_diff($temp, $keys);
// Fetch first missing keys
$missing = array_shift($missing);
// Split array depending on missing key
$final = array_chunk($arr, $missing);

var_dump($final);

Output

array(2) 
 [0]=>
 array(4) 
 [0]=>
 string(5) "world"
 [1]=>
 string(2) "is"
 [2]=>
 string(1) "a"
 [3]=>
 string(10) "wonderfull"
 
 [1]=>
 array(2) 
 [0]=>
 string(2) "in"
 [1]=>
 string(3) "our"

answered 2 hours ago

Sougata Bose

26.2k43061

1

It's worth noting this works if you only expect to have a single gap. If you have a second gap, they're not added to a third chunk. [Edit: And if the first chunk is longer than the second.]
â€“Â EPB
2 hours ago

@EPB is right. check here:-3v4l.org/1iVRg And result through my code:- 3v4l.org/aikEW
â€“Â Alive to Die
1 hour ago

add a commentÂ |Â

up vote
2
down vote

This should also work -

$arr = [
 0 => 'world',
 1 => 'is',
 2 => 'a',
 3 => 'wonderfull',
 5 => 'in',
 6 => 'our',
];
// Extract keys
$keys = array_keys($arr);
// Generate expected keys
$temp = range($keys[0], end($keys));
// Find missing keys
$missing = array_diff($temp, $keys);
// Fetch first missing keys
$missing = array_shift($missing);
// Split array depending on missing key
$final = array_chunk($arr, $missing);

var_dump($final);

Output

array(2) 
 [0]=>
 array(4) 
 [0]=>
 string(5) "world"
 [1]=>
 string(2) "is"
 [2]=>
 string(1) "a"
 [3]=>
 string(10) "wonderfull"
 
 [1]=>
 array(2) 
 [0]=>
 string(2) "in"
 [1]=>
 string(3) "our"

answered 2 hours ago

Sougata Bose

26.2k43061

1

It's worth noting this works if you only expect to have a single gap. If you have a second gap, they're not added to a third chunk. [Edit: And if the first chunk is longer than the second.]
â€“Â EPB
2 hours ago

@EPB is right. check here:-3v4l.org/1iVRg And result through my code:- 3v4l.org/aikEW
â€“Â Alive to Die
1 hour ago

add a commentÂ |Â

up vote
2
down vote

This should also work -

$arr = [
 0 => 'world',
 1 => 'is',
 2 => 'a',
 3 => 'wonderfull',
 5 => 'in',
 6 => 'our',
];
// Extract keys
$keys = array_keys($arr);
// Generate expected keys
$temp = range($keys[0], end($keys));
// Find missing keys
$missing = array_diff($temp, $keys);
// Fetch first missing keys
$missing = array_shift($missing);
// Split array depending on missing key
$final = array_chunk($arr, $missing);

var_dump($final);

Output

array(2) 
 [0]=>
 array(4) 
 [0]=>
 string(5) "world"
 [1]=>
 string(2) "is"
 [2]=>
 string(1) "a"
 [3]=>
 string(10) "wonderfull"
 
 [1]=>
 array(2) 
 [0]=>
 string(2) "in"
 [1]=>
 string(3) "our"

answered 2 hours ago

Sougata Bose

26.2k43061

This should also work -

$arr = [
 0 => 'world',
 1 => 'is',
 2 => 'a',
 3 => 'wonderfull',
 5 => 'in',
 6 => 'our',
];
// Extract keys
$keys = array_keys($arr);
// Generate expected keys
$temp = range($keys[0], end($keys));
// Find missing keys
$missing = array_diff($temp, $keys);
// Fetch first missing keys
$missing = array_shift($missing);
// Split array depending on missing key
$final = array_chunk($arr, $missing);

var_dump($final);

Output

array(2) 
 [0]=>
 array(4) 
 [0]=>
 string(5) "world"
 [1]=>
 string(2) "is"
 [2]=>
 string(1) "a"
 [3]=>
 string(10) "wonderfull"
 
 [1]=>
 array(2) 
 [0]=>
 string(2) "in"
 [1]=>
 string(3) "our"

answered 2 hours ago

Sougata Bose

26.2k43061

answered 2 hours ago

Sougata Bose

26.2k43061

answered 2 hours ago

Sougata Bose

26.2k43061

answered 2 hours ago

Sougata Bose

26.2k43061

1

It's worth noting this works if you only expect to have a single gap. If you have a second gap, they're not added to a third chunk. [Edit: And if the first chunk is longer than the second.]
â€“Â EPB
2 hours ago

@EPB is right. check here:-3v4l.org/1iVRg And result through my code:- 3v4l.org/aikEW
â€“Â Alive to Die
1 hour ago

add a commentÂ |Â

1

It's worth noting this works if you only expect to have a single gap. If you have a second gap, they're not added to a third chunk. [Edit: And if the first chunk is longer than the second.]
â€“Â EPB
2 hours ago

@EPB is right. check here:-3v4l.org/1iVRg And result through my code:- 3v4l.org/aikEW
â€“Â Alive to Die
1 hour ago

It's worth noting this works if you only expect to have a single gap. If you have a second gap, they're not added to a third chunk. [Edit: And if the first chunk is longer than the second.]
â€“Â EPB
2 hours ago

@EPB is right. check here:-3v4l.org/1iVRg And result through my code:- 3v4l.org/aikEW
â€“Â Alive to Die
1 hour ago

add a commentÂ |Â

up vote
1
down vote

You can make use of the array internal pointer to traverse the array.

<?php
$arr = Array(0=>"world",1=>"is",2=>"a",3=>"wonderfull",5=>"in",6=>"our");
print_r($arr);

$result = Array();
$lastkey;
while($word = current($arr))

 $key = key($arr);
 if(isset($lastkey) && $key == $lastkey + 1)
 
 $result[count($result) - 1] = $word;
 
 else
 
 $result = Array($word);
 
 $lastkey = $key;
 next($arr);

print_r($result);
?>

answered 2 hours ago

Ricky Mo

94515

add a commentÂ |Â

up vote
1
down vote

You can make use of the array internal pointer to traverse the array.

<?php
$arr = Array(0=>"world",1=>"is",2=>"a",3=>"wonderfull",5=>"in",6=>"our");
print_r($arr);

$result = Array();
$lastkey;
while($word = current($arr))

 $key = key($arr);
 if(isset($lastkey) && $key == $lastkey + 1)
 
 $result[count($result) - 1] = $word;
 
 else
 
 $result = Array($word);
 
 $lastkey = $key;
 next($arr);

print_r($result);
?>

answered 2 hours ago

Ricky Mo

94515

add a commentÂ |Â

up vote
1
down vote

You can make use of the array internal pointer to traverse the array.

<?php
$arr = Array(0=>"world",1=>"is",2=>"a",3=>"wonderfull",5=>"in",6=>"our");
print_r($arr);

$result = Array();
$lastkey;
while($word = current($arr))

 $key = key($arr);
 if(isset($lastkey) && $key == $lastkey + 1)
 
 $result[count($result) - 1] = $word;
 
 else
 
 $result = Array($word);
 
 $lastkey = $key;
 next($arr);

print_r($result);
?>

answered 2 hours ago

Ricky Mo

94515

You can make use of the array internal pointer to traverse the array.

<?php
$arr = Array(0=>"world",1=>"is",2=>"a",3=>"wonderfull",5=>"in",6=>"our");
print_r($arr);

$result = Array();
$lastkey;
while($word = current($arr))

 $key = key($arr);
 if(isset($lastkey) && $key == $lastkey + 1)
 
 $result[count($result) - 1] = $word;
 
 else
 
 $result = Array($word);
 
 $lastkey = $key;
 next($arr);

print_r($result);
?>

answered 2 hours ago

Ricky Mo

94515

answered 2 hours ago

Ricky Mo

94515

answered 2 hours ago

Ricky Mo

94515

answered 2 hours ago

Ricky Mo

94515

add a commentÂ |Â

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