PHP Verification two times the password of the same how to deal with the "0" solution

PHP Verification two times the password is consistent how to handle "0"?
Ask: very simple verification two times the password is consistent, encountered strange problem: if the first time input "00000", the second input "000", the program is considered consistent, that is, when the user entered the password is 0 o'clock, no matter how many 0, can pass.

Code:

Define an administrator variable, such as a committed value, or the default is Admin
$admname = (isset ($_post[' admname '))? Trim ($_post[' admname '): ' admin ';

if (Isset ($_post[' submitted '))
{
$admpass 1 = (isset ($_post[' Admpass1 '))? Trim ($_post[' admpass1 '): ";
$admpass 2 = (isset ($_post[' admpass2 '))? Trim ($_post[' admpass2 '): ";

if ($admname! = "&& $admpass 1! =" && ($admpass 1 = = $admpass 2))
{
...... ......

------Solution--------------------
try = = =
------Solution--------------------
Compares the MD5 encryption results.
------Solution--------------------
It's probably just a comparison of values, explicitly converted to string types.
------Solution--------------------
Explore

Thank you very much for the reply from upstairs! The use of = = = solved.

But just a simple string comparison, why do I have to limit the data type? Two of them are strings, uh.

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