PHP里还有这些好用的技巧

array_count_values

计算一维数组中所有值出现的个数

<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>

输出：

<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 <= lines; i++) { $numbering.append($('

').text(i)); }; $numbering.fadeIn(1700); }); });

以上就介绍了PHP里还有这些好用的技巧，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。