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Today we bring you the definition and usage of PHP function trim (). Definition and usage the trim () function deletes white-space characters and other predefined characters from both ends of the string. Syntax Trim (string,charlist) parameter description string required. Specify the string to check. Charlist Optional. Specify the string to convert. If this argument is omitted, all of the following characters are deleted: ""-NULL "t&quo ...
PHP Tutorial trim () Form validation is not an empty instance, it should be an entry-level instance, telling you how to use the trim function to remove a space and then determine if the user is submitting data that is empty. <html> <body> <form method= "POST" action= "formerrorcheck.php" > <h1>contact informat ...
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 '); ...
PHP Tutorial Preg_replace function Base with instance code//preg_replace (mixed $pattern, mixed $replacement, mixed $subject [, int $limit =-1 [, Int & $count]]) topic is a matching search pattern, replacing//* To search for the pattern. It can be a string or an array of strings. Electronic modifiers make preg_r ...
PHP Get file size function and instance tutorial <?php function GetFileSize ($url) {$url = Parse_url ($url); if ($fp = @fsockopen ($url [' Host '],empty ($ url[' Port ']: $url [' Port '], $error)] {fputs ($fp, "get". Empty ($ ...)
PHP + MySQL combination is a common site to build, but how to use PHP to access the MySQL database through the Web? The following from the working principle of Web database architecture to talk about. Query the database from the Web: How the Web Database Schema Works 1. A user's browser makes an HTTP request that requests a specific Web page, where the Departing form is submitted to a php script file (eg, results.php) ; 2, Web server receives the results.php page please ...
This is a PHP string truncation function Oh, this is a Chinese string support oh, it can intercept html and Chinese and Western mixed content, and the html tag is not Count in the character interception, if the html tag is not closed, the program will automatically filter extra tags. * / function mysubstr ($ str, $ length) {$ ...
php tutorial email spam (phpmailer send qq mail) * @ author ray * @ since 2009-08-07 smtp mail account must be more, otherwise it will be qq server as spam. 2. Appropriate dormancy smtp.dat file format for smtp.163.com | sss@163.com | password smtp.sina.com | www@sina.com | password www.jzread.com program randomly selected a connection. ..
Member Registration Verification Code (PHP tutorial +mysql tutorial +ajax) <!doctype HTML Public "-//W3C//DTD XHTML 1.0 transitional//en" "http://www.w3.org/tr/ Xhtml1/dtd/xhtml1-transitional.dtd "> <html> <hea ...
<?php/** * Send QQ mail via Phpmailer * @author Ray * @since 2009-08-07 * * Define (' __debug__ ', false); Define (' __psw_file__ ', DirName (__file__). '/smtp.dat '); Define (' Sleeping_email ', dirname (__file__) ....
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