字符串函数：
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数学函数：
立即学习“PHP免费学习笔记（深入）”；
<span> <span> = 123.123456<span><span> <span print> <span round>(<span>);<span><span> <span> <span print> <span round>(<span>,3);<span><span> <span> <span rand>(1,10);<span><span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
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一个功能强大的B2B与B2C的购物平台，除了原本OSC功能外，增加更新的功能： 一、 取消了register_globals必须开启的限制 二、 將HTML程式碼与PHP程式碼完全分离，採用了smarty 樣板引擎 三、 每支档案includes所需函数与资料库连结，使的网页显示速度明显提升 四、 检视、购买商品群组权限设定 五、 十八岁以下禁购机制 六、 折价券购物抵扣机制 七、 礼券购物机制
数组函数：
立即学习“PHP免费学习笔记（深入）”；
<span> <span> = <span array><span><span> <span array_push>(<span>, "Maroon 5");<span><span>
<span> <span array_push>(<span>, "Bruno Mars"<span><span> <span array_push>(<span>, "Nickelback"<span><span> <span array_push>(<span>, "Katy Perry"<span><span> <span array_push>(<span>, "Macklemore"<span><span> <span print> <span count>(<span><span><span>
<span>
<span> <span> = <span array>("david","alana","violet","rory"<span><span> <span sort>(<span>);<span><span array>
<span> <span print> <span join>(", ", <span>);<span><span prints alana david rory violet>
<span> <span rsort>(<span>); <span><span array></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
立即学习“PHP免费学习笔记（深入）”；
