eval

Description

eval() evaluates the string given in code_str as PHP code. Among other things, this can be useful for storing code in a database text field for later execution.

There are some factors to keep in mind when using eval() . Remember that the string passed must be valid PHP code, including things like terminating statements with a semicolon so the parser doesn't die on the line after the eval() , and properly escaping things in code_str .

Also remember that variables given values under eval() will retain these values in the main script afterwards.

Example 1. eval() example - simple text merge <?php $string = 'cup'; $name = 'coffee'; $str = 'This is a $string with my $name in it.<br>'; echo $str; eval( "\$str = \"$str\";" ); echo $str; ?>

The above example will show:

This is a $string with my $name in it. This is a cup with my coffee in it.