{"id":430,"title":"echo,print,printf,print_r,sprintf,var_dump,var_export\u7684\u533a\u522b","good":0,"bad":0,"hit":2100,"created_at":"2019-04-07 21:09:53","content":"<pre class=\"brush:php;toolbar:false\">&lt;?php\n\/**\n&nbsp;*&nbsp;Created&nbsp;by&nbsp;PhpStorm.\n&nbsp;*&nbsp;User:&nbsp;www.hu-rong.com\n&nbsp;*&nbsp;Date:&nbsp;2019\/4\/7\n&nbsp;*&nbsp;Time:&nbsp;20:28\n&nbsp;*\/\n$h=&#39;http:\/\/&#39;;\n$w=&#39;www.hu-rong.com&#39;;\n$arr&nbsp;=&nbsp;array(&#39;0&#39;=&gt;&#39;a&#39;,&#39;1&#39;=&gt;&#39;b&#39;,&#39;2&#39;=&gt;&#39;c&#39;);\n\necho&nbsp;$h,$w;\/\/\u8f93\u51fa\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u4e32\necho&nbsp;&#39;&lt;br\/&gt;&#39;;\n\nprint($w);\/\/\u8f93\u51fa\u5b57\u7b26\u4e32\necho&nbsp;&#39;&lt;br\/&gt;&#39;;\n\nprintf(&quot;%d&quot;,&nbsp;&quot;17,999&quot;)&nbsp;;\/\/\u8f93\u51fa\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\necho&nbsp;&#39;&lt;br\/&gt;&#39;;\n\n\nprint_r($arr);\/\/\u6253\u5370\u5173\u4e8e\u53d8\u91cf\u7684\u6613\u4e8e\u7406\u89e3\u7684\u4fe1\u606f\u3002\necho&nbsp;&#39;&lt;br\/&gt;&#39;;\n\n$num&nbsp;=&nbsp;5;\n$location&nbsp;=&nbsp;&#39;tree&#39;;\n$format&nbsp;=&nbsp;&#39;There&nbsp;are&nbsp;%d&nbsp;monkeys&nbsp;in&nbsp;the&nbsp;%s&#39;;\necho&nbsp;sprintf($format,&nbsp;$num,&nbsp;$location);\/\/Return&nbsp;a&nbsp;formatted&nbsp;string\n\necho&nbsp;&#39;&lt;br\/&gt;&#39;;\nvar_dump($arr);\/\/\u6253\u5370\u53d8\u91cf\u7684\u76f8\u5173\u4fe1\u606f\necho&nbsp;&#39;&lt;br\/&gt;&#39;;\n\n\n$arr1=var_export($arr);\/\/\u8f93\u51fa\u6216\u8fd4\u56de\u4e00\u4e2a\u53d8\u91cf\u7684\u5b57\u7b26\u4e32\u8868\u793a\nvar_dump($arr1);\necho&nbsp;&#39;&lt;br\/&gt;&#39;;\n\n\n$arr2=var_export($arr,true);\/\/\u8f93\u51fa\u6216\u8fd4\u56de\u4e00\u4e2a\u53d8\u91cf\u7684\u5b57\u7b26\u4e32\u8868\u793a,\u60a8\u53ef\u4ee5\u901a\u8fc7\u5c06\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3a&nbsp;TRUE\uff0c\u4ece\u800c\u8fd4\u56de\u53d8\u91cf\u7684\u8868\u793a\u3002\nvar_dump($arr2);<\/pre><p><span style=\"font-family: &quot;Microsoft YaHei&quot;; font-size: medium;\">http:\/\/www.hu-rong.com<\/span><br\/><span style=\"font-family: &quot;Microsoft YaHei&quot;; font-size: medium;\">www.hu-rong.com<\/span><br\/><span style=\"font-family: &quot;Microsoft YaHei&quot;; font-size: medium;\">17<\/span><br\/><span style=\"font-family: &quot;Microsoft YaHei&quot;; font-size: medium;\">Array ( [0] =&gt; a [1] =&gt; b [2] =&gt; c )&nbsp;<\/span><br\/><span style=\"font-family: &quot;Microsoft YaHei&quot;; font-size: medium;\">There are 5 monkeys in the tree<\/span><br\/><span style=\"font-family: &quot;Microsoft YaHei&quot;; font-size: medium;\">array(3) { [0]=&gt; string(1) &quot;a&quot; [1]=&gt; string(1) &quot;b&quot; [2]=&gt; string(1) &quot;c&quot; }&nbsp;<\/span><br\/><span style=\"font-family: &quot;Microsoft YaHei&quot;; font-size: medium;\">array ( 0 =&gt; &#39;a&#39;, 1 =&gt; &#39;b&#39;, 2 =&gt; &#39;c&#39;, )NULL&nbsp;<\/span><br\/><span style=\"font-family: &quot;Microsoft YaHei&quot;; font-size: medium;\">string(45) &quot;array ( 0 =&gt; &#39;a&#39;, 1 =&gt; &#39;b&#39;, 2 =&gt; &#39;c&#39;, )&quot;<\/span><\/p>"}