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what is differenc between mysql_connect and mysql_pconnect
ashish.gijare
- Feb 18th, 2009
When we use mysql_connect every time we have to make connection when every time page is loaded but when we use mysql_pconnect it does not have make connection every time.
manas ranjan dikhit
- May 31st, 2007
Mysql_connect establish a new connection every time when it connect to database but mysql_pconnect first searches if there is pre-existing connection or not. if it found connection then it make use of that connection to databases.
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how i can get ip address
Deepak Radhakrishnan
- Feb 14th, 2007
$_SERVER['REMOTE_ADDR'] works for most of the web hosting sites like godaddy.
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how i will check that user is, logged in or not. i want to make it a function and i want to use in each page and after login i want to go in current page(same page. where i was working)
abc
- Sep 12th, 2011
For this we can use the session objec($_SESSION)t. When the user login with his/ her user name and password, usually we check those to ensure for correctness. If that user name and password are valid ...
ashish.gijare
- Feb 18th, 2009
We can use session for that when user logged in with the help of session we can check weather he has logged or not.
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What is difference between require_once(), require(), include().Becouse above three function usely use to call a file in another file.
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bicu- Member Since Sep-2005 | Feb 4th, 2006
Difference between require() and require_once(): require() includes and evaluates a specific file, while require_once() does that only if it has not been included before (on the same page).
So, require_once() is recommended to use when you want to include a file where you have a lot of functions for example. This way you make sure you don't include the file more times and you will not get the "function re-declared" error.Difference between require() and include() is that require() produces a FATAL ERROR if the file you want to include is not found, while include() only produces a WARNING.
There is also include_once() which is the same as include(), but the difference between them is the same as the difference between require() and require_once().aditya dhanraj
- Apr 29th, 2015
Require_once():-using this function we can access the data of another page once i. e we can not access the same page multiple times.
require():-using this function we can access the data of another page at the desire page multiple times i.e we can access the contents of same page multiple times.LAILA NISHI
- Feb 21st, 2015
Include() and require() dose same work.The difference is on error cheeking .Require () gives a fatal error when file cant load whereas include() gives a warning and continue to execute.
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How to use email validation in Java script.Like User can't enter invalid email address?
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bicu- Member Since Sep-2005 | Feb 2nd, 2006
First of all, here is the javascript function that tests if an email address is valid.
It checks for a lot of things: to see if the email contains a "@" sign and a dot, checks to see if the @ is before the dot, and so on.<script>
function isMail(str)
{
var at="@";
var dot=".";
var lat=str.indexOf(at);
var lstr=str.length;
var ldot=str.indexOf(dot);
if (str.indexOf(at)==-1) return false;
if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr) return false;
if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr) return false;
if (str.indexOf(at,(lat+1))!=-1) return false; if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot) return false;
if (str.indexOf(dot,(lat+2))==-1) return false;
if (str.indexOf(" ")!=-1) return false;
return true;
}
// the next function will be used to validate the form. I made this as a separate function because you might want to validate more fields.
function validate_form()
{
if (!isMail(document.form1.mail.value))
{
alert("Please enter a valid email address");
document.form1.mail.focus();
return false;
}
// if the value entered is not a valid email address,
// we show a message, focus on the field and return false.
// returning false will make sure the form is not submitted
// if we got here, it means the email address is valid
return true;
// return true means that the form is submitted.
}
</script>After placing this function in the code, here is what you need to put in the form.
Let's say the form only has the email address and a submit button.
<form action="/" method="post" onsubmit="return validate_form()" name="form1">
<input type="text" name="email" value="">
<input type="submit" name="submit_button" value="continue">
</form>Ravi Maggon
- May 16th, 2011
<html> <head> <script type="text/javascript"> function check() { var filter=/^[a-zA-Z0-...
SwapnilSwapnil
- Sep 7th, 2009
There are many varieties of email validation. This one is simple, but effective.function isValidEmail(str) { return (str.indexOf(".") > 2) && (str.indexOf("@") > 0); }
