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ereg function?????

Posted on 2002-04-09
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Last Modified: 2008-03-06
hai all,

How to check my string
WSEP_23B
using ereg function
I use this below code cannot achieve my target.
ereg("^([A-Z]{4})."_".([1-9]{1,2}[A_Z]$",trim($value[2]))


can anyone help me
bye
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Comment
Question by:baska
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10 Comments
 
LVL 4

Expert Comment

by:lokeshv
Comment Utility
you just wann to check the specific string (WSEP_23B)

or the pattern..
??


Lk
0
 

Author Comment

by:baska
Comment Utility
I actually want to check the pattern.

but I don't mind knowing the coding to check for the specifc string also.


thanks

0
 

Author Comment

by:baska
Comment Utility
I actually want to check the pattern.

but I don't mind knowing the coding to check for the specifc string also.


thanks

0
 

Author Comment

by:baska
Comment Utility
I actually want to check the pattern.

but I don't mind knowing the coding to check for the specifc string also.


thanks

0
 
LVL 4

Expert Comment

by:lokeshv
Comment Utility
for specific string .search use string funtions.

like

str_replace()
substr_count();



for more check this ...

http://www.php.net/manual/en/ref.strings.php
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Author Comment

by:baska
Comment Utility
I wanted to use ereg function only.
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LVL 6

Accepted Solution

by:
andreif earned 25 total points
Comment Utility
Hi,

you have some mistakes in your expression

"^([A-Z]{4})."_".([1-9]{1,2}[A_Z]$"

should read as

"^([A-Z]{4})_([1-9]{1,2}[A-Z])$"

problem 1: expression ."_". in the centre is confusing, because it splits string into two "^([A-Z]{4})." and ".([1-9]{1,2}[A_Z]$" and _ between those string must cause an error

problem 2: A_Z should read as A-Z - just a mistype
problem 3: closing brace ) was missed

That's all!
0
 

Author Comment

by:baska
Comment Utility
hai andreif,
I actually check thru if condition like

if (strlen(trim($value[2])) == 8 && ereg("^([A-Z]{4})_([1-9]{1,2}[A-Z])$",trim($value[2])));

 echo "<td>".trim($value[2])."</td>";
else
 //display $value in red color in browser.

as u told I change the coding but still I can see the value in red color ie it takes the else condition only.

can u advice where I went wrong.

Thank u
baska
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LVL 6

Expert Comment

by:andreif
Comment Utility
Hi,

it seems correct, at least it works at me.

Can you give an examples of $value[2] values?

Note:
1. expression is CAse SenSitive now :)
2. you don't have to check length, because regular expression has require rather strict string format, it allows strings like

ABCD_1E or ABCD_12E, so if you need only strings with 2 digits (length=8) you should replace [1-9]{1,2} with [1-9]{2} and don't worry about length
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Author Comment

by:baska
Comment Utility
hai andreif,

I got it.

I just did a simple mistake.
I added the coding as u gave now works well
Thank u
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