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Array definition and initialization What is an array? An array is a programming structure that is a variable that holds a set of values or a series of values. For example, at the time of the census, personal identity registration, such as name, gender, nationality, birth, etc. can be used as an array. The array created in the php tutorial is defined using the array () structure, such as $ people = array ('name', 'sex', 'nation', 'brith'); and how to display the value of each element in the array Is to use the index from 0, the index number ...
Php tutorial to convert Chinese Pinyin code The original realization of this program is to convert the Chinese characters into the corresponding machine code, and then define the relative Pinyin, Chinese Pinyin conversion is just a matter of inquiry. $ d = array ("a", - 20319), array ("ai", - 20317), array ("an", - 20304), array ("ang", - 20295), ...
PHP Tutorial Traversing two-dimensional array and multi-dimensional array code On the PHP array, let's talk about two-dimensional array and multi-dimensional traversal code, the following three examples to test the array traversal PHP code function. * / function arr_foreach ($ arr) {if (! is_array ($ arr)) {return false;} foreach ($ arr as $ key = & ...
php tutorial delete array elements and delete duplicate array function This article is mainly about the deletion of the php array value Oh, tell you how to delete an array of elements at the specified location, the two tell you to use the array_keys function to delete the array of duplicate elements. * / $ a = array ("red", "green", "blue", "yellow"); ...
php tutorial array write file (variable into php file) The following three php array write file code, there are two kinds is to save the array in php format, so you can run this file in php, there is a write Cached files, * / $ str = "<? Phprn $ list =". Var_export ($ list). "; Rn?>"; // write temp.inc.php $ fil ...
php tutorial to get all the files in the directory and all the directories saved to the array program This is a use of the glob function to the specified directory of all the files and folders saved to the data and then we foreach and then judge the preservation of the relevant data inside Oh. $ dirs = array (); foreach (glob ("./*") as $ d) {$ tmp = explode ('....
php string function is essential, give us a lot of convenience to solve practical problems, such as the use of PHP string function string segmentation, interception, matching, replacement and other treatment. PHP string function is essential for PHP entry learners, so we will mainly introduce PHP string segmentation function processing experience, open the PHP string function Getting Started tutorial tour. Commonly used PHP string segmentation function Commonly used PHP segmentation string functions are explode, strtok, str_split, mainly for demolition ...
In this lesson, we're going to do some more complicated work to show the data in multiple rows, the database exchanging data one, the while loop in this lesson, we will continue to drill down and use PHP and MySQL to write some simple and useful pages. We start with the database we created yesterday and display the data in the library, but we'll touch it a little bit. First, we use the following code to query the contents of the database. <html> <body> <?php $db = Mys ...
PHP in_array,trim,isset,unset,is_numeric function usage. Let's take a look at the tutorial on how to use these functions. In_array ($array) This function is to determine whether the current value is an array oh EX: $array = array (1,2); if (In_array ($array)) {die (' In_array determines that it is an array '); ...
This paper introduces how to build a network database application method by MySQL of the golden combination of Web database, PHP is a server-side embedded hypertext Processing language similar to Microsoft ASP, it is a powerful tool to build dynamic website. While MySQL is a lightweight SQL database server that runs on a variety of platforms, including Windows NT and Linux, and has a GPL version, MySQL is considered the best product for building a database-driven dynamic Web site. PHP, MySQL, and Apache are Linux ...
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