# minte9 LearnRemember

### Chunks

Split an array into separate parts.
``````
/**
* Create an array containing a range of elements ...
* then split into chunks
*/

\$data = range(1,100);
\$chunks = array_chunk(\$data, 2);

foreach(\$chunks as \$v) {
echo " \$v[0], \$v[1] \n";
}

# 1, 2 / 3, 4  ... 99, 100
``````

### Merge

Merge one or more arrays.
``````
/**
* Merge one or more arrays
*
* If arrays have the same string keys ...
* the later value for that key will be overwriten
*
* If don't want to ovewrite use the + array union operator
*/

\$A = array_merge((array) 'foo', [1, 2]);
\$B = array_merge(['color'=> 'red', 1], ['a', 'color'=>'green']);
\$C = ['a' => 'A', 1] + ['a' => 'B', 2, 3];

echo 'A: ' . print_r(\$A, true); // foo, 1, 2
echo 'B: ' . print_r(\$B, true); // green, 1, a
echo 'C: ' . print_r(\$C, true); // A, 1, 3
``````

### Diff

All the values of \$A that do not appear in \$B
``````
/**
* Diff returns ...
* all values in an array not appearing in another
*
* Intersect keeps ...
* all the values of each element
*/

\$A = [1, 2, 3];
\$B = [1, 3, 4];

print_r( array_diff(\$A, \$B) ); // 2
print_r( array_intersect(\$A, \$B) ); // 1, 3
``````

Last update: 357 days ago