PHP2008-12-01
Deleting Cookies in PHP
It's a good idea to make the expiration time a few hours or an entire day in the past, in case your server and the user's computer have unsynchronized clocks. For example, if your
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PHP2008-12-01
Reading Cookie Values in PHP
A cookie's value isn't available in $_COOKIE during the request in which the cookie is set. In other words, the setcookie() function doesn't alter the value of $_COOKIE. On subsequ
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Setting cookies in PHP
You can pass additional arguments to setcookie() to control cookie behavior. The third argument to setcookie() is an expiration time, expressed as an epoch timestamp. For example,
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Encrypting and decrypting in PHP
The mcrypt extension is an interface with mcrypt, a library that implements many different encryption algorithms. The data is encrypted and decrypted by mcrypt_encrypt()and mcrypt_
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GDBM, NDBM, DB2, DB3, DBM, and CDB Databases in PHP
PHP can support a few different kinds of DBM backends: GDBM, NDBM, DB2, DB3, DBM, and CDB. The DBA abstraction layer lets you use the same functions on any DBM backend. All these b
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Using Text-File Databases in PHP
Storing your data in a text file doesn't require any additional database software to be installed, but that's pretty much its only advantage. Its main disadvantages are clumsiness
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PHP2008-12-01
Upload and Download files with FTP in PHP
FTP stands for File Transfer Protocol and is a method of exchanging files between one computer and another. Unlike with HTTP servers, it's easy to set up an FTP server to both send
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Extract files from a .zip file using PHP
The unzip.php sample program below, extracts files from a ZIP archive. It uses the pc_mkdir_parents() function. The program also requires PHP's zip extension to be installed. You c
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Reading and Writing .gz files in PHP
The zlib extension contains versions of many file-access functions, such as fopen(), fread(), and fwrite() (called gzopen(), gzread(), gzwrite(), etc.) that transparently compress
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Reading .ini files in PHP
The function parse_ini_file() reads configuration files structured like PHP's main php.ini file. Instead of applying the settings in the configuration file to PHP's configuration,
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Reading word by word from a file in PHP
Processing every word proceeds differently depending on how "word" is defined. The code in this recipe uses the Perl-compatible regular-expression engine's \s whitespace metacharac
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Counting Lines, Paragraphs, or Records in a File using pc_split_paragraphs() in PHP
You want to count the number of lines, paragraphs, or records in a file.To count lines, use fgets(). Because it reads a line at a time, you can count the number of times it's calle
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