Php Replace Character

PHP substr_replace Replacement string Specify position character/* int Mb_strlen (string $str [, String $encoding]) <?php tutorial echo substr_replace ("Hello World ", the Earth", 6); Hello Earth?> is worth mentioning, when start and length are ...

Intermediary trading http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall at present, based on PHP web site development has become the mainstream of the current site development, 　　This article focuses on the PHP site attacks and security precautions to explore, to reduce the site vulnerabilities, I hope to help! A common PHP site security vulnerabilities for PHP vulnerabilities, the current common vulnerabilities have ...

It would be faster to enclose the string in single quotes instead of double quotes. Because PHP searches for variables in double-quoted strings, single quotes do not. Note that only echo can do this: it's a "function" that takes multiple strings as arguments, Echo is a language structure, not a real function, so the function with double quotes). 1, if you can define the class method as static, as far as the definition of static, it will speed up nearly 4 times. 2, $ row ['id'] speed ...

Today in the project encountered a textarea wrap problem, debugging for a long time have not been resolved. To textarea in the carriage return line into br into the database. Here is my solution to this problem, the final count is completely understood, it is almost capsize in capsize 1. Must know that the textarea in the newline is n (personal test found by the Enter key is n, as if under linux rn ) 2. Before using nl2br, carefully read the manual carefully, I was depressing, generally understood as the n into a ...

Php tutorial pattern verification code generation code and include ajax verification example application previously written verification code program is to provide the source code, but did not really figure verification code generated to verify the instance, this time we have a complete example of PHP validation It's There are 3 files: authcode.php ----- verification code generation php file authcode.html ----- front display page dealauthcode.php ----- ajax submitted to the background processing to determine the verification code is correct Processing page ...

Php tutorial pattern verification code generation code and include ajax verification example application previously written verification code program is to provide the source code, but did not really figure verification code generated to verify the instance, this time we have a complete example of PHP validation It's There are 3 files: authcode.php ----- verification code generation php file authcode.html ----- front display page dealauthcode.php ----- ajax submitted to the background processing to determine the verification code is correct Processing page ...

php tutorial read sql file into the database tutorial (support phpmyadmin export) like this php read sql file into the database, the most used is the database backup and restore to, the principle is very simple according to the specified format into a .sql file or Export using phpmyadmin can be used to achieve the import Oh. * / function into_sql ($ file) {global $ mysql tutorial _host, $ mysql_us ...

This article is mainly introduced str_replace function to replace a single character, and replace the data, and specify the number of str_replace replacement, the last replacement is very useful, especially in the SEO optimization methods. / mixed str_replace (mixed $ search, mixed $ replace, mixed $ subject [, int & $ count]) function returns a string or any problem in the search ...

PHP tutorial Gets the current URL domain name instance code function getServerName () {$ServerName = Strtolower ($_server[' server_name ']?$_server["Server_   NAME ']:$_server[' http_host ']); if (Strpos $ServerN ...

method to filter HTML custom functions function Ihtmlspecialchars ($string) {if (Is_array ($string)) {foreach ($string as $key => $val) {$string [$key] = Ihtmlspecialchars ($val); } else {$string = Preg_replace (' ...)