How to split an array in php without changing the key value

In PHP, you can use the array_chunk() function to split the array. Just set the third parameter of the function to "true", and the key value will not be changed (the original key name will be retained) ;Syntax format "array_chunk ($array,$size,true)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In PHP, you can use the array_chunk() function To split an array, it can split an array into multiple. Syntax format:

array_chunk(array,size,preserve_keys);

Parameter description:

• arrayrepresents the array to be divided;

• sizeindicates the number of elements in the divided sub-array;

• preserve_keysindicates whether to retain the original key names in the arr array, the default is false, that is, not retained, each divided sub-array will use a new numerical index starting from 0; if set to true, the original key names in arr will be retained.

array_chunk() will split the arr array into multiple sub-arrays, and the number of elements in each sub-array is determined by size. The last subarray may have less than size elements.

Example: Use the array_chunk() function to split the array without changing the key value

"张三","sex"=>"男","age"=>20,"course"=>"php教程","website"=>"php中文网"); $res = array_chunk($arr,3,true); var_dump($res); ?>

Output result:

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