Php method for counting the number of array elements

This article describes how to use php to count the number of elements in an array. For more information, see count (): count the number of elements in an 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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