Answer Posted / umesh kumar sharma

Indexing is use to improve the performance of database. it
has 32 types of indexing in each table

Are php sessions secure?

533

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What is the output of the following php code?

499

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Is age nominal or ordinal?

514

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What is the difference between explode and split?

496

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Is it possible to protect special characters in a query string?

544

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What is substr() in php? And how it is used?

527

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How a variable is declared in php?

518

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What is php static function?

543

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What are static variables in php?

511

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What are the three classes of errors that can occur in php?

529

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What is the purpose of the '.myi' file extension? What do thes file contain?

526

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What is psr in php?

613

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What is the main function of php?

533

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How to set session.gc_divisor properly?

601

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Can we override static method in php?

540

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