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拉里佩奇23条箴言帮你度过创业低谷 - 资讯 - 清泛网 - 专注C/C++及内核技术
					...事物一直在改变,如果你的事业是稳定的,那你可能是有问题的。
编者注:或许你不知道拉里·佩奇,但一定知道谷歌。他说“你可能觉得谷歌很好用,但我仍觉得它烂透了。”你永远不会相信,就是这个人,一手缔造了谷歌...				
				
				
							PHP and Enumerations
					I know that PHP doesn't have native Enumerations. But I have become accustomed to them from the Java world. I would love to use enums as a way to give predefined values which IDEs' auto-completion features could understand.
                    
                    
                        
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							How to Free Inode Usage?
					...trick. my problem was to have an incredible amount of sessions in the /lib/php/sessions directory. maybe somebody has the same problem
                
– SteMa
                May 22 '12 at 14:51
            
        
    
    
        
            
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							Get original URL referer with PHP?
					...%2fstackoverflow.com%2fquestions%2f1864583%2fget-original-url-referer-with-php%23new-answer', 'question_page');
                    }
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							How to POST JSON Data With PHP cURL?
					...our second page, you can nab the incoming request using file_get_contents("php://input"), which will contain the POSTed json.  To view the received data in a more readable format, try this: 
echo '<pre>'.print_r(json_decode(file_get_contents("php://input")),1).'</pre>';
In your code, ...				
				
				
							MySQL, Check if a column exists in a table with SQL
					...his works well for me.
SHOW COLUMNS FROM `table` LIKE 'fieldname';
With PHP it would be something like...
$result = mysql_query("SHOW COLUMNS FROM `table` LIKE 'fieldname'");
$exists = (mysql_num_rows($result))?TRUE:FALSE;
    
    
        
            
            
                
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							The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead [dupl
					When I attempt to connect to a MySQL server from PHP, I see the following error:
                    
                    
                        
                            
                                
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							is_file or file_exists in PHP
					...xists in directory or false if file not exists as I check in 2020 might be php version update it
                
– heySushil
                Mar 29 at 16:43
            
        
    
            
	    
        
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							Two-way encryption: I need to store passwords that can be retrieved
					...there is much more to note...
How do I encrypt and decrypt a password in PHP?
See below for a strong class that takes care of everything for you:
What is the safest algorithm to encrypt the passwords with?
safest?  any of them.  The safest method if you're going to encrypt is to protect against ...				
				
				
							How to pass an array within a query string?
					...value fields or arrays would be:
?cars[]=Saab&cars[]=Audi (Best way- PHP reads this into an array)
?cars=Saab&cars=Audi (Bad way- PHP will only register last value)
?cars=Saab,Audi (Haven't tried this)
Form Examples
On a form, multi-valued fields could take the form of a select box set ...				
				
				
							