新手学习php怎么入门？含学习路线、5大php性能优化技巧！
<div style="color: black; text-align: left; margin-bottom: 10px;"><p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">针对</span>一个php<span style="color: black;">研发</span><span style="color: black;">刚才</span>入门的程序员<span style="color: black;">来讲</span>，经常会碰到学习方向的疑惑。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">倘若</span><span style="color: black;">无</span>人<span style="color: black;">晓得</span>，php新手很难<span style="color: black;">知道</span>自己应该从哪里<span style="color: black;">起始</span>学习。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">今天w3cschool就给亲爱的小伙伴们分析php语言学习的方向性问题。</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">首要</span>，html是你必须要学习的，<span style="color: black;">由于</span>它是前端最<span style="color: black;">基本</span>的语言，它好<span style="color: black;">例如</span>是一个人的骨架。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">那样</span>皮肤自然<span style="color: black;">便是</span>css学习。而Javascript<span style="color: black;">便是</span>前端的精魂。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">除此之外，你还需要精研的有：MySql数据库、jquery等。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">倘若</span>以上这些东西你学的差不多之后，就<span style="color: black;">能够</span>尝试去做一个简单的网站，用来检验自己的学习成果。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">而<span style="color: black;">这般</span>项目式的学习方式，恰恰<span style="color: black;">亦</span>是<span style="color: black;">每一个</span>php<span style="color: black;">研发</span>程序员所要具备的学习态度。</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">当然，<span style="color: black;">咱们</span>在<span style="color: black;">运用</span>php的过程中难免会遇到php性能问题，<span style="color: black;">例如</span><span style="color: black;">运用</span>PHP语言连接的服务不行、php语法不恰当的<span style="color: black;">运用</span>、php<span style="color: black;">自己</span>的语言局限。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">因而，<span style="color: black;">咱们</span>仍然要学会php性能优化的技巧，这些能够<span style="color: black;">帮忙</span>你php<span style="color: black;">研发</span>如鱼得水。</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">下面w3cschool就来分享几条简单粗暴的php性能优化技巧：</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、用i+=1代替i=i+1。 符合c/c++的习惯，效率相当高!</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、应当<span style="color: black;">尽可能</span>去<span style="color: black;">运用</span>php内部函数。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">3、foreach效率更高，<span style="color: black;">因此</span>你几乎<span style="color: black;">能够</span>用foreach代替while和for循环。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">4、不要在循环内运算，<span style="color: black;">由于</span>这会影响到性能问题。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">举个栗子，$str = "hello world";for($i = 0; $i < strlen($str); $i ++){ ...}，这是错误的例子。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">正确的它应该是：$str = "hello world";$strlen = strlen($str);for($i = 0; $i < $strlen; $i++){...}</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">5、<span style="color: black;">倘若</span>你<span style="color: black;">发掘</span><span style="color: black;">能够</span><span style="color: black;">运用</span>PHP内部字符串操作函数，就<span style="color: black;">不消</span>正则表达式。</strong></p>
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