php - If form is submitted, then checkbox checked -

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i want make if form submitted then checkbox should checked.

here have:

<input type="checkbox" id="chk" <?php if ($_post['submit']){ echo checked } ?> />

html:

<form id="form1" enctype="multipart/form-data" action="" method="post">     //stuff here     <input name="submit" type="submit" value="upload" /> </form>

i getting blank page when test it... appreciated.

blank because there php error of php code , have turned error_reporting off.

  1. if($_post['submit']) should if (isset($_post['submit']))

  2. echo checked should echo 'checked';

the sample below works me.

<form id="form1" enctype="multipart/form-data" action="" method="post">     //stuff here     <input name="submit" type="submit" value="upload" /> </form> <input type="checkbox" id="chk" <?php if (isset($_post['submit'])){ echo 'checked'; } ?> />

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