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How to create a variable in PHP
Posted By :
Posted Date :
October 11, 2011
$var_name = value;
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How to create a variable in PHP
What is Private Constructor? and it's use? Can you create instance of a class which has Private Constructor?
When a class declares only private instance constructors, it is not possible for classes outside the program to derive from the class or to directly create instances of it. (Except Nested classes)
Make a constructor private if:
1) You want it to be available only to the class itself. For example, you might have a special constructor used only in the implementation of your class' Clone method.
2) You do not want instances of your component to be created. For example, you may have a class containing nothing but Shared utility functions, and no instance data. Creating instances of the class would waste memory.
Which index option causes SQL Server to create an index with empty space on
the leaf level of the index?
What are the requirements to create a CLR based user-defined type?
CLR must be enabled for the instance and A class created with a CLR-compatible language.
What do you need to specify to create a linked server?
OLE DB Data Source
To create a string literal exclude escape sequence
@string. With adding @ at the beginning you can escape literal
What command is used to create a table by copying the structure of another table?
CREATE TABLE .. AS SELECT command
To copy only the structure, the WHERE clause of the SELECT command should contain a FALSE statement as in the following.
CREATE TABLE NEWTABLE AS SELECT * FROM EXISTINGTABLE WHERE 1=2;
If the WHERE condition is true, then all the rows or rows satisfying the condition will be copied to the new table.
How u can create XML file?
To write Dataset Contents out to disk as an XML file use:
Can I create your own custom templates in Sharepont?
Yes you can. You can have templates for business plans, doctor's office, lawyer's office, Educational, health etc and if you want to share with anyone else in SharePint community you can upload your own SharePoint templates to Microsoft website.
How to remove a Session variable?
You cannot create an Index on a column of the following data type
Is it possible to create Cluster Index on Unique Key Column?
Unique key column by default creates a non-cluster index on the column. Primary key creates cluster index on the column. The only difference is Unique key column allows only one null value. So is it possible to have cluster index on Unique key column?
The answer is YES. Though Unique key allows null value but it still maintains the uniqueness of the column.
Which SQL command is used to create a set of privileges that can be granted to users or to other roles?
Is it possible to set SessionState to readonly mode? Readonly mode means, we can only read data from session but we can not write any data in session variable?
Yes, it is possible.
EnableSessionState property has a value "Readonly" which actually makes the session state read only.
Is it possible to create cookies with keys? Explain using some example.
Yes, it is possible to create cookies with keys.
Cookies is a dictionary at the time of initialization, if key is specified with it. (You can determine whether cookie is dictionary or not using HasKeys property. )
For an example:
Response.Cookies("Testcookie")("key1") = "key1"
Response.Cookies("Testcookie")("key2") = "key2"
After this if you make assignment like,
Response.Cookies("Testcookie") = "noKey"
Then," key1" and "key2" of cookie("Testcookie") will be deleted.
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