我教PHP(一)
公司来了个新人,号称写过8个月PHP,然后会写mysql_connect,不会写循环,不理解二维数组等。基础差的让我想一头撞死。
唉,教一教吧,看能不能教出来。
-----------------------------------------------------------
PHP的变量最主要有3种。string , array , object
怎么使用它们呢。
-----------------------------------------------------------
对于String
$string = "字符串"
-----------------------------------------------------------
建个test.php,测试下面的例子,看看输出结果有什么不同,有什么相同的
$str = "我是字符串";
echo $str;
$str2 = "他是数组,我是字符串2";
echo $str2;
-----------------------------------------------------------
对于Array
$arr = array( 'key'=>'value' );
-----------------------------------------------------------
建个test.php,测试下面的例子,看看输出结果有什么不同,有什么相同的
$arr = array( 'name'=>'张三' , 'php'=>'初学' );
print_R($arr)
$arr2['name'] = '张三';
$arr2['php'] = '初学';
$arr2['info'] = 'HTML熟练';
print_R($arr2)
-----------------------------------------------------------
对于Object
$ob = new stdClass;
$ob->key = value;
-----------------------------------------------------------
建个test.php,测试下面的例子,看看输出结果有什么不同,有什么相同的
$ob = new stdClass;
$ob->name = '张三';
$ob->php = '初学';
print_R($ob)
$ob2 = new stdClass;
$ob2->name = '张三';
$ob2->php = '初学';
$ob2->info = '还不错';
print_R($ob2)

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