Operating string so important in programming especially in PHP. Why so important? Because the work with php, is building a good information system, facilities to make searching the web, and various other things related to web development is not separated from the operating string. So many functions that have a string operation, and also a lot of string functions that are frequently used, so that authors need to share a few articles about this string operation. For the first part of the article the author will explain the function of which has 2 additional tasks other than the search string. Among other :
- substr()
- strstr()
<?phpThe result is:
$tanggal = '012409';
$bulan = substr($date, 0, 2);
$hari = substr($date, 2, 2);
$tahun = substr($date, -2);
echo "$hari/$bulan/$tahun";
?>
24/01/09
Explanation is as follows:
$month = substr($date, 0, 2);
Take a 2-digit characters from the front, the result is 01.
$day = substr($date, 2, 2);
Take the characters from 2 to 3 digits. Because the string has a sequence beginning 0, then the number 2 in the variable $date have in order to position 2. The result is 24.
To prove it:
<?phpthe results are :
$date ='012409 ';
echo $date [2];
?>
2
And the last is
$year = substr($date, -2); This means take 2 characters from the back. The result is 09.
Strstr(), this function is used to return all the strings behind the string searched. For example there is a sentence:
"Smartness radiated from the eternal pure handsome. - Al-k",
the characters are searching "--",
the results of the function strstr() is "- Al-k"
Example of use:
The result is:
- Al-k
Implementation of strstr() example like this:
Explanation is as follows:
if ($theword = strstr($sentence, $alert)) ( if the characters in the search in this case the $sign in the string $sentence, then return the string that are behind these variables into the $theword.
echo 'The phrase is in a cool earlier by'."'". substr($theword, strlen($sign ))."'";
part is essentially substr($theword, strlen($sign))
If the change in value is actually
substr( "- Al-k", 2);
show the search string with a pass mark of --.
The result is:
Al-k
So that the results of the integrity of the script
Is:
Expression earlier in a dogged by 'Al-k'
Strstr(), this function is used to return all the strings behind the string searched. For example there is a sentence: "Smartness radiated from the eternal pure handsome. - Al-k",
the characters are searching "--",
the results of the function strstr() is "- Al-k"
Example of use:
<?php
$sentence = "smartness radiated from the eternal pure handsome. - Al-k";
$sign ='--';
$theword = strstr($sentence, $sign);
echo $theword;
?>
The result is:
- Al-k
Implementation of strstr() example like this:
<?php
$sentence = "smartness radiated from the eternal pure handsome. - Al-k";
$sign ='--';
if($theword = strstr($sentence, $alert)) (
echo 'The phrase is in a cool earlier by'."'". substr($theword, strlen($sign))."'";
Else()
echo "dont have any expression!";
)
?>
Explanation is as follows:
if ($theword = strstr($sentence, $alert)) (
if the characters in the search in this case the $sign in the string $sentence, then return the string that are behind these variables into the $theword.
echo 'The phrase is in a cool earlier by'."'". substr($theword, strlen($sign ))."'";
part is essentially substr($theword, strlen($sign))
If the change in value is actually
substr( "- Al-k", 2)
show the search string with a pass mark of --.
The result is:
Al-k
So that the results of the integrity of the script
<? php
$sentence = "smartness radiated from the eternal pure handsome. - Al-k";
$sign ='--';
if ($theword = strstr($sentence, $alert)) (
echo 'The phrase is in a cool earlier by'."'". substr($theword, strlen($sign ))."'";
Else()
echo "Dont have any expression!";
)
?>
The result is:
Expression earlier in a dogged by 'Al-k'
OK.. thats it for now, see you at next tutorial!
This tutorial translated from: http://www.ilmuwebsite.com/
