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Php Advanced Interview Questions

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eregi_replace() function is identical to ereg_replace() except that it ignores case distinction when matching alphabetic characters.

func_num_args() function returns the number of parameters passed in.

In MySQL, the default table type is MyISAM.
Each MyISAM table is stored on disk in three files. The files have names that begin with the table name and have an extension to indicate the file type.

The ‘.frm’ file stores the table definition.
The data file has a ‘.MYD’ (MYData) extension.
The index file has a ‘.MYI’ (MYIndex) extension,

100, it’s a reference to existing variable.

SELECT sitename, COUNT(*) AS NumOccurrences
FROM tbl_sites
GROUP BY sitename HAVING COUNT(*) > 1

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