Create a PHP Function
function is a block of code that can be executed whenever we need it.
Creating PHP functions:
- All functions start with the word “function()”
- Name the function – It should be possible to understand what the function does by its name. The name can start with a letter or underscore (not a number)
- Add a “{” – The function code starts after the opening curly brace
- Insert the function code
- Add a “}” – The function is finished by a closing curly brace
function function_name()
{
code to be executed;
}
Example Use a PHP Function
<html>
<body>
<?php
function writedate()
{
$d = date(”Y-m-d”); //today is 2008-04-27
echo “$d”;
}
echo “Hello world!<br />”;
echo “Today is “;
writedate();
?>
</body>
</html>
and output is
Hello world!
Today is 2008-04-27
| Posted in php basic | No Comments
The foreach Statement
The foreach statement is used to loop through arrays.
For every loop, the value of the current array element is assigned to $value (and the array pointer is moved by one) – so on the next loop, you’ll be looking at the next element.
foreach (array as value)
{
code to be executed;
}
Example
The following example demonstrates a loop that will print the values of the given array:
<html>
<body>
<?php
$arr=array(”one”, “two”, “three”);
foreach ($arr as $value)
{
echo “Value: ” . $value . “<br />”;
}
?>
</body>
</html>
and output is
Value: one
Value: two
Value: three
| Posted in php basic | 2 Comments
The for Statement
For statement is some Looping statements in PHP
The for statement is used when you know how many times you want to execute a statement or a list of statements.
for (initialization; condition; increment)
{
code to be executed;
}
Note: The for statement has three parameters. The first parameter initializes variables, the second parameter holds the condition, and the third parameter contains the increments required to implement the loop. If more than one variable is included in the initialization or the increment parameter, they should be separated by commas. The condition must evaluate to true or false.
Example
<html>
<body>
<?php
for ($i=1; $i<=5; $i++)
{
echo ” The number is $i<br />”;
}
?>
</body>
</html>
And output is
The number is 1
The number is 2
The number is 3
The number is 4
The number is 5
| Posted in php basic | 2 Comments
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