PHP set-3 interview questions

Question 1 :PHP set-3 questions

Would I use print “$a dollars” or “{$a} dollars” to print out the amount of dollars in this example?

Answer :In this example it wouldn’t matter, since the variable is all by itself, but if you were to print something like “{$a},000,000 mln dollars”, then you definitely need to use the braces.

Question 2 :PHP set-3 questions

What are the different tables present in MySQL? Which type of table is generated when we are creating a table in the following syntax: create table employee(eno int(2),ename varchar(10))?

Answer :Total 5 types of tables we can create
2. Heap
3. Merge
MyISAM is the default storage engine as of MySQL 3.23. When you fire the above create query MySQL will create a MyISAM table.

Question 3 :PHP set-3 questions

How To Create a Table?

Answer :If you want to create a table, you can run the CREATE TABLE statement as shown in the following sample script:

include "mysql_connection.php";

$sql = "CREATE TABLE Tech_links ("
. ", url VARCHAR(80) NOT NULL"
. ", notes VARCHAR(1024)"
. ", counts INTEGER"
. ", time TIMESTAMP DEFAULT sysdate()"
. ")";
if (mysql_query($sql, $con)) {
print("Table Tech_links created.\n");
} else {
print("Table creation failed.\n");


Remember that mysql_query() returns TRUE/FALSE on CREATE statements. If you run this script, you will get something like this:
Table Tech_links created.

Question 4 :PHP set-3 questions

How can we encrypt the username and password using PHP?

Answer :Answer1
You can encrypt a password with the following


You can use the MySQL PASSWORD() function to encrypt username and password. For example,

INSERT into user (password, ...) VALUES (PASSWORD($password")), ...);


Question 5 :PHP set-3 questions

How do you pass a variable by value?

Answer :Just like in C++, put an ampersand in front of it, like $a = &$b

Question 6 :PHP set-3 questions

What is the functionality of the functions STRSTR() and STRISTR()?

Answer :string strstr ( string haystack, string needle ) returns part of haystack string from the first occurrence of needle to the end of haystack. This function is case-sensitive.
stristr() is idential to strstr() except that it is case insensitive.

Question 7 :PHP set-3 questions

When are you supposed to use endif to end the conditional statement?

Answer :When the original if was followed by : and then the code block without braces.

Question 8 :

How can we send mail using JavaScript?

Answer :No. There is no way to send emails directly using JavaScript.
But you can use JavaScript to execute a client side email program send the email using the “mailto” code. Here is an example:

function myfunction(form){
	return true;


Question 9 :PHP set-3 questions

What is the functionality of the function strstr and stristr?

Answer :strstr() returns part of a given string from the first occurrence of a given substring to the end of the string. For example: strstr(“”,”@”) will return “”.
stristr() is idential to strstr() except that it is case insensitive.

Question 10 :PHP set-3 questions

What is the difference between ereg_replace() and eregi_replace()?

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

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