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Some Impotent PHP Interview Questions And Answers-part 2

10:46 AM | | 536
Some Impotent PHP Interview Questions And Answers-part 2

Here is some Importent interview Question for php developers 

Q.1- What is PHP ?
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Ans. The PHP is the server side scripting language that is used to develop attractive and dynamic web application. It is used for developing web based dynamic applications.

 

Q.2-PHP was developed by whom and When?
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Ans. PHP was developed by Rasmus Lerdorf in 1994.

 

Q.3 What is the difference between PHP4 and PHP5?
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Ans. PHP5 supports oops concept while PHP4 doesn’t support oops concepts. PHP5 error handling is better than PHP4’s error handling . PHP 5 shows function’s parameter hint while PHP 4 doesn’t show.

 

Q.4 What is the difference between echo and print ?
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Ans. Echo and print both are the PHP statement that is used to display the output. Multiple argument can pass separated by , in echo statement. But using print statement single argument can pass. Echo is faster than print statement. Print returns always true while echo doesn’t return any value.

 

Q.5- What is the difference between $var and $$var?
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Ans. $var is a simple variable while $$var is known as reference variable. $var = “Abdur”; $$var = “is a PHPDeveloper”; $var is a simple PHP variable that we are used to. But the $$var is not very familiar like $var. It creates a variable name $Abdur with the value “is f PHPDeveloper.” Assigned . break it like this ${$var} => $Abdur.

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