php return true

function luhn_checker($card_num,$sum){ .... return ?; That is, you can return a bool value and return a value such as $sum, and the function needs to determine whether it is true or false if(luhn_checker($card_num)){ } Reply content:

For example, the following code: $str4="php-class,mysql-class,div-css,0,dreamweaver";$s=strtok($str4,',');while($s!==false){ echo $s.""; $s=strtok(',');} while ($s ===true) {} Why can't it be displayed?True where to use it ~ ~Beginners Please

For example, the following code: {code...} while ($ strue) {} cannot be displayed? Where can I use true ~~ For beginners, please take care of O (∩ _ ∩) O ~ Happy New Year ~ My own understanding is :! If 'false' is true, 1. The value is not equal to 2

PHP, a nested abbreviated name, is an abbreviation for the English Super Text preprocessing language (Php:hypertext preprocessor). PHP is an HTML embedded language, PHP and Microsoft's ASP quite a bit similar, is a server-side implementation of

PHP Tutorial Configuration Chinese Narration Let's see what you see, php.ini. [PHP] ;;;;;;;;;;;; WARNING;;;;;;;;;;;;; This is the default settings file for new PHP installations.; By default, PHP installs itself with a configuration suitable for;

PHP features: the command line mode starts with version 4.3.0. PHP provides a new type of cli sapi (Server Application Programming Interface, Server Application Programming Port) support, named CLI, command Line Interface, that is, Command Line

echo in_array('01',array('1')) When using In_array not to use strict, why return 1, how to judge? Reply content: echo in_array('01',array('1')) When using In_array not to use strict, why return 1, how to judge? In_array ($needle,

In recent projects, a field is encountered that is "enabled" if the value is 0,1 when the query is not writtenif isset ($args _array[' USEFLG ']) &&! Empty ($args _array[' USEFLG '])) {..... }So I did not find the time for 0, think about it, should

Problem What is PHP file? which software can be used to open Workaround PHP, a nested abbreviated name, is an abbreviation for the English Super Text preprocessing language (Php:hypertext preprocessor). PHP is an HTML embedded language, PHP and

As I mentioned in my previous article, the performance bottleneck of most websites is not on the PHP server, because it can be easily handled by adding servers or CPU cores horizontally (for various cloud hosts, it is more convenient to increase the