AddSlashes: String added to the slash. bin2hex: binary into hexadecimal. Chop: Remove continuous blanks. Chr: returns the ordinal value of the character. chunk_split: The string is divided into small pieces. convert_cyr_string: Converts the ancient Slavonic string into another string. crypt: Encrypt the string with DES encoding. echo: output string. explode: cut the string. flush: clear the output buffer. ...
mysql tutorial _result (): The advantage is easy to use; The disadvantage is that the function is less, a call can only get a row of elements of the result data set, a relatively low efficiency for larger database tutorials; mysql_result () function returns a field in the result set value. If successful, the function returns the field value. If it fails, it returns false. Syntax mysql_result (data, row, field) Parameter Description data Required. Specifies the result identifier to use. This identifier is ...
php tutorial Regularly specify the string content Preg_match function description Although the code is small, but the code is as follows: preg_match ('/ ^ (?! string) /', 'aa') === true This is used to verify a Whether a string begins with a 'string' or not, in a perl or perl-supported regular expression language such as php, can be done with a look-ahead declaration, as the regular expression is: preg_mat. ..
The include () or require () function lets you insert the contents of a file in the file before the server executes the php tutorial file. These two functions are the same in all other respects, except that they handle errors differently. The include () function generates a warning (but the script continues to execute), whereas the require () function generates a fatal error (the script stops executing after an error occurs). <html> <body ...
Can customize what kind of string and how long [PHP] Code function random ($ length) {$ hash = ''; $ chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz'; $ max = strlen ($ chars) - 1; mt_s ...
2010 should be remembered because SQL will die this year. This year, the relational database is on the verge of falling, and this year developers found they no longer needed long, laborious columns or tables to store data. 2010 will be the starting year for document databases. Although this momentum has lasted for many years, it is now the era of more and broader document-based databases. From cloud-based Amazon to Google, a large number of open source tools, and the ensuing CouchDB and MongoDB. So what is MongoD ...
The date / time function allows you to extract and format the date and time on the server The mktime () function returns a unix time stamp of the date. The parameter always represents the gmt date, so is_dst has no effect on the result. Arguments can be left blank from right to left, and empty parameters set to the corresponding current gmt value. Syntax mktime (hour, minute, second, month, day, y ...
mktime = mktime ($ hours, minute, seconds, month, day, years) $ start_time = mktime (0,0,0,01,09,2010); // start time $ end_time & n ...
This is my own write a file upload function, mainly when doing some corporate website often use to upload pictures, uh, I wrote such a function, I hope you master your valuable comments! / ************ File upload function ****************** / / * * $ formname & nb ...
// Each line of the html form is converted to an array of csv format <? function get_tr_array ($ table) {// php tutorial Open source code $ table = preg_replace ('' '' 'td [^>] *?>' si ' , $ table); $ table = str_replace ("</ td>", '& q ...
php tutorials redirects and page quick turn <? function turntopage ($ url = "index.php", $ info = "page turn in ...", $ second = 2) {print "<html> n <head> n <title> page turn .... </ title> n "; ...
A specific overview of the str_replace () function in php str_replace ($ search, $ replace, $ subject) Example 1 str_replace ("n", "", '465s4d6f5s4ad1as65d4fa6sn54df65sdafgsdfn65g4sd65g4hdf6n54ghd6fbghdfgh'); ...
Due to the temporary use of foreign space, when I publish a blog, I found that time is always wrong. Based on my previous experience writing programs, this is a time zone problem. This problem is not difficult to solve, write down my solution for future reference. PHP script-side urban settings can be set in php.ini date.timezone key value is 'Asia / Shanghai' can be. But usually the shared virtual host itself does not modify php.ini permissions. This time should be in the public part of the program to join ...
PHP is a great language for the fast-growing dynamic web pages. PHP also has the characteristics of junior programmers friendly, such as PHP do not need dynamic statement. However, these features may cause a programmer to unintentionally sneak a security vulnerability into a web application. There are a number of proven vulnerabilities in popular security mailing lists in PHP applications, but once you understand the basic types of vulnerabilities that are common in PHP applications, you'll find it equally as secure as any other language. In this article, I will detail in detail what will lead to security vulnerabilities ...
Code: ctrl + y Find: disable_functions found after the = added (here are prohibited in the php inside the function) Code: copy the contents to the clipboard exec, system, passthru, error_log, ini_alter, dl, openlog, syslog, readlink , symlink, link, leak, fsockopen, proc_open, popep ...
SQL injection attacks are the most common means of hacking websites. If your site does not use strict user input validation, then often vulnerable to SQL injection attacks. SQL injection attacks are usually done by submitting bad data or query statements to the site database, most likely causing records in the database to be exposed, changed, or deleted. Here to talk about SQL injection attacks is how to achieve, but also how to prevent. Look at this example: //putput $ name = "ilia"; DELETE FROM ...
Several important php.ini options Register Globals php> = 4.2.0, the default value for php.ini's register_globals option is set to Off, and when register_globals is set to On, the program can receive various environment variables from the server , Including the form submitted variables, but also because PHP does not have to initialize the value of the variable, resulting in a big security risk. Example 1: // check_admin () with ...
First, an overview of the php tutorial -excelreader is a php class that reads excel xsl file contents. Its download URL: http://sourceforge.net/projects/phpexcelreader/ The blog download address: phpexcelreader.zip test with ex ...
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 ...
We all know that although the LAMP combination is a good choice, how to set up a web hosting server that supports PHP, ASP, ASP.NET, JSP, Perl, or IIS 6 with Windows 2003 is the best. There are many articles on the Internet to configure PHP articles on IIS 6, but those methods are not performance is not good, is to upgrade the trouble. The following method allows you to configure the first time, you can easily upgrade. Upgrade here refers to the upgrade from one php4 version to another ...
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