There are also these useful techniques in PHP

array_count_values

Count the number of occurrences of all values ​​in a one-dimensional array

<code><span>$array</span> = <span>array</span>(<span>1</span>, <span>"hello"</span>, <span>1</span>, <span>"world"</span>, <span>"hello"</span>);
print_r(array_count_values(<span>$array</span>));</code>

Output:

<code><span>Array</span>
(
    [<span>1</span>] => <span>2</span>
    [hello] => <span>2</span>
    [world] => <span>1</span>
)</code>

').addClass('pre-numbering').hide(); $(this).addClass('has-numbering').parent().append($numbering); for (i = 1; i ').text(i)); }; $numbering.fadeIn(1700); }); });

The above has introduced these useful techniques in PHP, including related content. I hope it will be helpful to friends who are interested in PHP tutorials.