All about decision making statements in php

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Three decision making statements
in PHP
If, elseif and switch statement are used for making
decision based on different situations.
1. If…else statement:- If one condition is true and
other is false then this statement is used.
2. Elseif statement:- If there are more than one
condition true this statement can be used.
3. Switch statement:- This statement is used to select
one block of code to execute out of many blocks. This
is beneficial to avoid long blocks of if…else, elseif
codes.

The If...Else Statement in PHP
If one condition is true and another is false then if else
statement is used.
Below is syntax:-
If (Condition)
Code with true condition;
Else
Code with false condition;

ElseIf Statement in PHP
If there is a posibilities that several condition is true,
then use elseif statement. Below is syntax for elseif
statement in PHP:-
if (condition)
Code1 with posible true condition;
elseif (condition)
Code2 with posible true condition;
else
code with posible true condition;

Switch Statement in PHP
If you want execute one block of code out of many, use switch statement. The
switch statement is to avoid long block of if..elseif..else code.
Below is switch statement syntax:-
switch (expression)
{
case label1:
code to be executed if expression = label1;
break;
case label2:
code to be executed if expression = label2;
break;
default:
code to be executed
if expression is different
from both label1 and label2;
}

More About Switch Statement in PHP
Switch statement executes line by line and once finds a
true condition it execute the corresponding block code
and all other remaining cases till the end of switch
statement. To avoid this add a break statement at the
end of each case block. The break statement tells the
php to jump out of the switch case statement once it
execute the code with first true case. If there is no
matching case then the code in default block will be
executed.

Difference between if…else and switch case in PHP
The switch case statement is an alternative of
if…elseif…else statement. The if…elseif…else statement
also do same thing. The switch case statement finds a
suitable block of code with true case and execute that
code.
The only difference is that switch case statement is
executed line by line and once a true condition is find
not only executed that case but also execute all the
subsequent cases till the end of switch statement. To
prevent this break statement is used.

Thank You……

All about decision making statements in php

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