Php statistics on the number of array elements, php statistics on the number of arrays _ PHP Tutorial

Php calculates the number of array elements. php calculates the number of arrays. Php is used to count the number of array elements. php counts the number of arrays. count (): counts the number of elements in the array. sizeof (): has the same purpose as count, both functions can return the php method for counting the number of array elements.

Count (): counts the number of elements in the array;

Sizeof (): it has the same purpose as count (). both functions can return the number of array elements. we can get the number of elements in a regular scalar variable. If the array passed to this function is an empty array or an unspecified variable, the number of returned array elements is 0;

Array_count_value (): counts the number of times each specific value has exceeded in the array $ array;

For example:

  $array=array(4,5,1,2,3,1,2,1);  $ac=array_count_value($array);

An array named $ ac will be created, including:

Keyword value: 4 1 5 1 1 3 2 3 1

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$arr = array(      '1011,1003,1008,1001,1000,1004,1012',      '1009',      '1011,1003,1111'    );$result = array();foreach ($arr as $str) {  $str_arr = explode(',', $str);  foreach ($str_arr as $v) {    $result[$v] = isset($result[$v]) ? $result[$v] : 0;    $result[$v] = $result[$v] + 1;  }}print_r($result);

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Distinct count (): counts the number of elements in the array. sizeof (): has the same purpose as count (). both functions can return numbers...