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In PHP, you can use the count () function to query how many elements are in the array. The function returns the number of array elements with the syntax "count (array, mode)"; the second parameter defaults to 0, which means that the elements in the multi-dimensional array are not calculated; if set to 1, the multi-dimensional array elements are calculated recursively.

This article operating environment: Windows10 system, PHP7.1 version, Dell G3 computer.

Php queries how many elements there are in the array

You can query how many elements are in the array.

The count () function returns the number of elements in the array.

Grammar

Count (array,mode)

Array is required. Specifies the array to be counted.

Mode is optional. Specifies the mode of the function. Possible values:

0-default. All elements in the multidimensional array are not evaluated.

1-Recursively calculates the number of elements in the array (calculates all elements in the multidimensional array).

Return value: returns the number of elements in the array.

Examples are as follows:

The output is 3.

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