Double quotes issue in eval PHP

Question

Here is my code and I am getting an error like this.

Parse error: syntax error, unexpected '' ";' (T_ENCAPSED_AND_WHITESPACE) in C:\\wamp64\\www\\PHPQC\\php\\base\\meditabmssql\\med_page.php(1369) : eval()'d code on line 1.

Code:

<?php
$string = 'cup';
$name = 'coffee';
$str = 'This is a $string wi"th my $name in it.';
eval("\$str = \"$str\";");
echo $str;
?>

here is a reference( http://php.net/manual/en/function.eval.php )

Answer 1

You should escape some characters:

<?php
$string = 'cup'; 
$name = 'coffee'; 
$str = 'This is a $string wi"th my $name in it.'; 
eval("\$str = \"\$str\";"); 
echo $str;
?>

Answer 2

You need to escape the quotes that are inside $str . You can use addslashes() for this.

<?php
$string = 'cup'; 
$name = 'coffee'; 
$str = 'This is a $string wi"th my $name in it.'; 
$strslash = addslashes($str);
eval("\$str = \"$strslash\";"); 
echo $str;
?>