PHP learning record sharing three-PHP Tutorial-php.cn

PHP learning record sharing three

小云云

Release： 2023-03-20 21:46:02

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We have shared two PHP learning record sharings with you earlier. This article will continue to share with you the third PHP learning record sharing. I hope it can help everyone.

34. //Two parameter sets_POST() $_REQUEST

function input($arr,$brr){ 
		//var_dump($brr[&#39;json&#39;]);die;	
		$array=array();
		if($brr[&#39;json&#39;]==&#39;undefined&#39; ||$brr[&#39;json&#39;]==NULL){
		
			foreach($brr as $k=>$v){
				$array[$k]=$v;
			}
		}else{
		
			foreach($arr as $k=>$v){
				$array[$k]=$v;
			}
		}
		
		return $array;
	}

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$input= input(_POST(),$_REQUEST);
$gh = $input[&#39;gh&#39;];

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To unify the passed parameters, you can use _POST and _REQUEST at the same time,

35.java learning: https://course.tianmaying.com/java-basic

36.

The fopen() function opens a file or URL. If the opening fails, this function returns FALSE.

37. Variables are containers for storing information: http://www.w3school.com.cn/php/php_variables.asp38.

38. SQL determines whether the table in the database is in: https://zhidao.baidu.com/question/330963972518590485.html

39. PHP file_exists() function file_exists() function checks whether a file or directory exists.

40. If you find an error when uploading code using SVN, check the log to see where you accidentally changed it. Don’t just look at the part you changed to prevent other codes from being accidentally changed without you knowing it!

41.

$gh_db   = ($_REQUEST[&#39;gh&#39;]==&#39;gh_0d75bc84fdf3&#39;) ? &#39;ecs273_dz&#39;: $_REQUEST[&#39;gh&#39;];       
$sql = "select * from information_schema.columns WHERE TABLE_SCHEMA=&#39;$gh_db&#39; AND table_name = &#39;ecs_goods&#39; and column_name =&#39;freight_template&#39;"; //判断数据表是否有该字段
$row1 = $db->getRow($sql);
if($row1){
$str=&#39;,freight_template&#39;;   //判断然后拼装sql语句
$str1=",&#39;$freight_template&#39;";
$str2="freight_template = &#39;$freight_template&#39;, ";	
}else{
$str=&#39;&#39;;$str1=&#39;&#39;;	$str2=&#39;&#39;;}

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42. The php strlen() function returns the length of the string

43. The PHP strpos() function retrieves the specified characters or text in the string , used to find specific strings in long strings 44. PHP constants are used throughout the entire script to automatically global

<?phpdefine("GREETING", "Welcome to www.php.cn!", true);echo greeting;?>

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Related recommendations:

PHP learning record sharing one

PHP learning record experience two

PHP learning methods and experience

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