In this code example, we create two strings and assign them to$aand$bvariables. We print them with theechokeyword. The first string is created with the double quote delimiters, the second one with single quotes. PHP string heredoc The heredoc preserves the line breaks and other whitespace (...
There are two basic types of functions. Built-in functions and user defined ones. The built-in functions are part of the PHP language. Examples are:phpinfo,roundorabs. The user defined functions are created by application programmers to cover their needs. They are created with thefunctionkeyword...
IV. Clear cache PHP cache the return value of some file-related functions for better performance. Affected functions: stat(), lstat(), file_exists(), is_writable(), is_readable(), is_executable(), is_file(), is_dir(), is_link(), filectime(), fileatime(), filemtime(), fileinode()...
Internally, the PHP interpreter treats arrays with numeric keys and arrays with string keys (and arrays with a mix of numeric and string keys) identically. Because of the resemblance to features in other programming languages, programmers often refer to arrays with only numeric keys as “numeric,...
<xsd:element name="lastName" minOccurs="0" type="xsd:string"/> </xsd:sequence> </xsd:complexType> </xsd:schema> The following is an instance letter document. It contains the three letter properties; date, firstName and lastName, and has unstructured text elements for the address and let...
In PHP, now() function is used to get the current date and time. Now-a-days, the date and time function is used in place of the now() function. Both the date and time are the inbuilt functions in which the date function is used to format the date and time according to the user...
Working with LOBs The discussion here will focus on PHP's OCI8 extension. It's also worth noting that Oracle provides the DBMS_LOB package, containing parallel procedures and functions for working with LOBs using PL/SQL. The PHP OCI8 extension registers a PHP class called "OCI-Lob" in the ...
resource opendir ( string path) string readdir ( resource dir_handle) void closedir ( resource dir_handle) Now you have mastered working with individual files, it is time to take a look at the larger file system - specifically how PHP handles directories. As you have seen so far, worki...
When we start a session PHP check for the presence of this cookie, if it does not exists it will be set and provide a random string in this cookie, each client will get unique string. If we want to use a session in a page we call session_start() method at the beginning of our ...
1: <?php 2: print "I have been included!!<BR>"; 3: print "But now I can add up... 4 + 4 = ".(4 + 4); 4: ?> Returning a Value From an Included Document Included files in PHP4 can return a value in the same way as functions do. As in a function, using the return...