PHP String Functions With Examples

jegan · #1 (**permalink**) 05-10-2008, 12:56 AM

hai

i have read PHP string functions. how can use these functions on right place with right functions give me some examples

Thanks

saravanan · #2 (**permalink**) 05-10-2008, 02:00 AM

str_split function

The str_split() function splits a string into an array.
to used to check give character comes or not in that input string

PHP Code:

  <?

$vInput="addf";

$vStr=str_split($vInput);

for($i=0;$i<count($vStr);$i++)

{

    if($vStr[i]=='d')

     {

         $vA++;

      }

}

echo $vA++;

?>

output;
2

jegan · #3 (**permalink**) 05-10-2008, 02:04 AM

what is explode function ?

saravanan · #4 (**permalink**) 05-10-2008, 02:08 AM

The explode() function breaks a string into an array.
example:

PHP Code:

  <?php

$str = "Hello world. It's a beautiful day.";

print_r (explode(" ",$str));

?>

output

Array
(
[0] => Hello
[1] => world.
[2] => It's
[3] => a
[4] => beautiful
[5] => day.
)

jegan · #5 (**permalink**) 05-10-2008, 02:10 AM

what is implode function?

saravanan · #6 (**permalink**) 05-12-2008, 06:42 AM

The implode() function returns a string from the elements of an array.
<?php
$arr = array('Hello','World!','Beautiful','Day!');
echo implode(" ",$arr);
?>

The output of the code above will be:

Hello World! Beautiful Day!

saravanan · #7 (**permalink**) 05-12-2008, 06:43 AM

how to find the no's words in a string ?

sureshbabu · #8 (**permalink**) 05-12-2008, 06:49 AM

The count_chars() function returns how many times an ASCII character occurs within a string and returns the information.

Syntax

count_chars(string,mode)

Example 1

In this example we will use count_char() with mode 1 to check the string. Mode 1 will return an array with the ASCII value as key and how
many times it occurred as value (e.g. in the example below, the ASCII value for the letter "l" is 108, and it occurs three times):

<?php
$str = "Hello World!";
print_r(count_chars($str,1));
?>

The output of the code above will be:

Array
(
[32] => 1
[33] => 1
[72] => 1
[87] => 1
[100] => 1
[101] => 1
[108] => 3
[111] => 2
[114] => 1
)

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