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eduard
4 years ago
9

It is a function that ends the connection to the database.

Computers and Technology
2 answers:
Mkey [24]4 years ago
4 0

Answer:

mysql_close/ mysqli_close.

Explanation:

mysql_close / mysqli_close  functions are used to close the connection to the database.mysql_close is removed from the php version 7.0.0 and mysqli_close is used .

If the link in the mysql_close is not specified it so the last link opened by mysql_connect() is assumed.

It returns the value True or False.True on success false on failure.

yanalaym [24]4 years ago
4 0

Answer:

a. mysql_close / mysqli_close

Explanation:

mysql_close/mysqli_close closes existing MySql connection.

Example usage:

<?php

$link = mysql_connect('localhost', 'userid', 'password');

// Close the connection reference $link

mysql_close($link);

?>

Mysqli represents an improved version of mysql driver.

<?php

$link = mysqli_connect('localhost', 'userid', 'password');

if ($link) {

   // Close the connection reference $link

   mysqli_close($link);

}

?>

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When passing a list of parameters to a stored procedure by name, you can omit optional parameters by omitting the parameter name and value from the list.

<h3>What is optional parameter?</h3>

It should be noted that optional parameter simply means a method that doesn't force pass arguments at calling time.

In this case, when passing a list of parameters to a stored procedure by name, you can omit optional parameters by omitting the parameter name and value from the list.

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3 years ago
What is the initial condition in this set of code?
marissa [1.9K]

Answer:An initial condition is an extra bit of information about a differential equation that tells you the value of the function at a particular point. Differential equations with initial conditions are commonly called initial value problems.

The video above uses the example

{

d

y

d

x

=

cos

(

x

)

y

(

0

)

=

−

1

to illustrate a simple initial value problem. Solving the differential equation without the initial condition gives you  

y

=

sin

(

x

)

+

C

.

Once you get the general solution, you can use the initial value to find a particular solution which satisfies the problem. In this case, plugging in  

0

for  

x

and  

−

1

for  

y

gives us  

−

1

=

C

, meaning that the particular solution must be  

y

=

sin

(

x

)

−

1

.

So the general way to solve initial value problems is: - First, find the general solution while ignoring the initial condition. - Then, use the initial condition to plug in values and find a particular solution.

Two additional things to keep in mind: First, the initial value doesn't necessarily have to just be  

y

-values. Higher-order equations might have an initial value for both  

y

and  

y

′

, for example.

Second, an initial value problem doesn't always have a unique solution. It's possible for an initial value problem to have multiple solutions, or even no solution at all.

Explanation:

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