PHP Tutorials

The article about PHP optimization is often to teach you how to write efficient code, this article intends to discuss the problem from another perspective, teach you how to configure an efficient environment, so the same can achieve the goal of

$a = 123.666; printf ("%.2f", $a); $b = 10.85; Print (" "); printf ("%.1f", $b); Why is the result 123.67 10.8 The last one rounded up, the latter one not? Reply to discussion (solution) printf ("%.1f%.16f", 10.85, 10.85); 10.8 10.849999999

The chmod () function is disabled by the server Upload file not even Read permission Assuming that the server configuration is not changed, in the program, there is no way to solve Reply to discussion (solution) Contact your server

if (Ini_get (' MAGIC_QUOTES_GPC ')) and the following paragraph. if (Ini_get (' MAGIC_QUOTES_GPC ')) { function stripslashesrecursive (array $array) { foreach ($array as $k = = $v) { if (is_string ($v)) { $array [$k] = stripslashes ($v); } else if

Locate the PHP configuration file and view the configuration file path command:/usr/local/php/bin/php-i |head 1. Configure Disable_function Disable_functions =

First of all, the definition, the first to look at the use of the scene, these definitions, Lao Meng, from the scene to think of design patterns is clearly a better way to understand. Scenario: The new username is registered to complete the work: 1

I have an array as follows $arr = Array (1,2,3,4,5,6,7,8); Want to use loop output Start1 1 2 3 4 End1 Start2 1 2 3 4 End2 ---------------------------------------------------------- Start1 5 6 7 8 End1 Start2 5 6 7 8 End2 It means to group each

echo (int) ((0.1+0.7) * 10); Showing 7 echo (int) ((0.2+0.7) * 10); Showing 9 ?> Why is the result of the first article not 8? Reply to discussion (solution) On the accuracy of floating-point numbers printf ('%0.16f ', (0.1+0.7) * 10);//7.999

if (Isset ($_server[' Http_x_rewrite_url ')) { $_server[' Request_uri '] = $_server[' Http_x_rewrite_url ']; $___s = Explode (".", $_server[' Request_uri ']); $____s = Explode ("?", $_server[' Request_uri ']); $_server[' path_info '] =

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This article introduces you to Configure:error:Cannot find Php-config. Please use the--with-php-config=path Error resolution method. Configure:error:Cannot find Php-config. Please use--with-php-config=path This error generally occurs when you

Project error, but run the page blank, do not know where the wrong. in php.ini error_reporting = E_all Modified Run discovery or no error prompt after reboot Reply to discussion (solution) Display_errors = OnSo you can see the error

First Kind Return date (' Ymd '). Str_pad (Mt_rand (1, 99999), 5, ' 0 ', str_pad_left); The second Kind Return date (' Ymd '). substr (Implode (NULL, Array_map (' Ord ', Str_split (substr (), 7, 13), 1)), 0, 8); Third Kind Generate 24-bit

thinkphp How to implement the domain name with a different length of string, enter a different controller method For example: Coding1 a string of 5-bit letters plus numbers Coding2 a string of 6-bit letters plus numbers How to implement the A

Take two sets of data from the two tables and deposit them $malls and $mall separately _tems It is now necessary to traverse the comparison of two arrays, and if the record color_id and size_id are the same, take out the price value of the $mall

Regular expressions are a relatively difficult part of PHP beginners to face, time long often will be the role of all kinds of symbols forgotten. But after a systematic summary, you will find that the difficulty of memory is not very large. Perl is

I'm doing it. A parody of beauty said jquery+ajax+php implementation of the "Like" rating feature has now been done to click on the image "like" the number of changes. When you click on a color picture, the picture becomes another gray, and the

@mysql_connect ("localhost", "root", "DS130901881") or Die ("Database error"); @mysql_select_db ("project") or Die ("MySQL error"); Mysql_set_charset ("GBK"); if (!empty ($_post[' Sub ')) { $title =$_post[' title '; $con =$_post[' con ']; $sql =

There are a lot of pictures, sorry ah .... I configured it on a Web-based tutorial, First appear a figure, feel fast success, and then input php_info.php, want to see that configuration information, on 404, I thought it was my PHP document wrong,

I don't know what this interceptor can do to get a variable. Interceptor (__set) Private function __set ($_key, $_value) {$this->$_key = $_value;} Interceptor (__get) Private function __get ($_key) {return $this->$_key;} Reply to discussion (