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NOTE : Copy This Code And Remove STEP=>1 And STEP=>.STEP=>1

if(isset($_POST['email']))

{

$emal = $_POST['email'];

if(preg_match("/^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/",$emal))

{

echo "Valid E-mail";

}

else

{

echo "Invalid Valid E-mail";

}

}

Q: How does validation work in PHP?

This answer is:

Related answers

NOTE : Copy This Code And Remove STEP=>1 And STEP=>.STEP=>1

if(isset($_POST['email']))

{

$emal = $_POST['email'];

if(preg_match("/^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/",$emal))

{

echo "Valid E-mail";

}

else

{

echo "Invalid Valid E-mail";

}

}

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The equation of a sphere with radius r, centered at (x0 ,y0 ,z0 ) is

(x-x0 )+(y-y0 )+(z-z0 )=r2

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If the line impedance is Z0 and the load is ZL then connect the load using a transformer with N turns ration. N=sqrt(Z0/ZL)

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The PDA accepting the even length palindrome is:

Let us suppose the string of (0,1) as even length palindrome. Let us consider the string be wwr -- the moves of PDA then can be defined as:

d(q0,E,E)= (qo, E)

d(q0,0,z0)= (q0,0,z0)

d(q0,1,z0)= (q0,1z0)

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Some mathematicians consider 0 as part of the natural numbers. The set is denoted by Z, or Z0.

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