php - How can I save data from a html form in a file? -

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• how put string text file in php? 2 answers

i did simple form.in trying modifying $_post output.

<?php      $lhs = array();     $rhs = array();      foreach($_post $key => $value) {         echo $key . "=" . $value;         echo "<br>";         $lhs[] = $key; //first array left hand side          $rhs[] = $value; //second array right hand side      }  ?>  <form name="form1" method="post" action="">     name: <input type="text" name="name"><br>     phone no: <input type="text" name="phone" /><br/>     course:<input type="text" name="course" /> <br />     <input type="submit" name="submit" value="sign up"> </form> 

so output of be:

name=xyz phone=123455453 course=be submit=sign 

now can observe see getting output of button also:

submit=sign 

which don't require in output. , require output this:

name=xyz phone=123455453 course=be 

this output want store in text file.

i not able modify output either not able store output in text file.

how can rid of submit button output , save data file?

any or advice appreciated , in advance.

this should work you:

here first added if statement check if submit button pressed isset() , fields aren't empty().

in foreach loop added if statement check if current key submit button , if yes skip iteration continue.

to save data file used file_put_contents() go through both arrays array_map() , return key/value pair combined elements new line character (php_eol) @ end of each element.

<?php      if(isset($_post["submit"]) && !empty($_post["name"]) && !empty($_post["phone"]) && !empty($_post["course"])) {          foreach($_post $key => $value) {             if($key == "submit") continue;             echo $lhs[] = $key; //first array left hand side              echo $rhs[] = $value; //second array right hand side         }          file_put_contents("file.txt", implode(php_eol, array_map(function($v1, $v2){             return "$v1:$v2";         }, $lhs, $rhs)), file_append);      }  ?>  <form name="form1" method="post" action="">     name: <input type="text" name="name"><br>     phone no: <input type="text" name="phone" /><br/>     course:<input type="text" name="course" /> <br />     <input type="submit" name="submit" value="sign up"> </form>