need help combining variables into a new variable

h2m

I am trying to build a new variable from an array for error checking. Below is my code.

} else if ($todo == "do_add"){
	$missing_array = array();
	$required_array = array("job_number","open","client_code","client","job_title","agency_contact","client_contact","type","output","size","quantity","colors","lengths","budget","concept","due","scope","primary","secondary","desired_response","positioning","main_selling","tone","sacred_cow","must_include","background");
	$c = 0;
	while ($c <= 25){
		if ($$required_array[$c] == ""){
			$add = "no";
			$missing_array = ($required_array[$c]);						
		}
		$c++;
	}

if ($add == "no"){
	$c = 0;
	$missing_count = count($missing_array);
	while ($c <= $missing_array){
		echo "$missing_array[$c] <BR>";
		${$missing_array[$c]."_error"} = "class='red'";
		$c++;
	}
include("add.php");
} else {

// error checking done. add to database
echo "Added to database";
}


}

I am trying to to take
${$missing_array[$c]."_error"} = "class='red'";
and build a variable called
$job_number_error that contains class='red' if $job_number is empty.

I am not sure how the syntax works. Thanks for anyany help.

Star_Gazer

I don't really konw what your aim is with this, but I'm guessing you want it to show if a form-field is empty? I have got stuck in trying to make string names from strings before... and it usually ends in a mess...

you could try making another array which corresponds with your original except that the names have error in the end :

<?php
$error_string = "";

foreach($required_array as $r) {

$error_string .= $r . "_error?";
}
$error_array = explode("?",$error_string);

or you could put the ones that return no into a error array e.g error_array("1","5","9") and then get the names of them by using $reqired_array[$error_array[$r]]. You would have to use the foreach again 🙂

I don't know if this helps, but you could try to explain it to me again and se if I understand then.

rubric

Use the eval() function. From what I understand, you're trying to create a variable that is named from the contents of an array concatenated with "_error". So, do exactly what you did but this time wrap it with the eval() function. For example:

eval("$".$missing_array[$c]."_error = \"class=\'red\'\"");

If $missing_array[$c] is equalled to "job_number", the above code will be evaluated as:

 
$job_number_error = "class='red'";

Enjoy.

Rubric