Forums / Developer / Is it possible to undef a varible whis is not defined
Jose Mourinho
Sunday 09 September 2007 1:22:43 pm
Hello all
Is it possible to undef a variable which is not defined?And I have one more question... The function is_set($var) returns true if $var is defined or have value different from ''
10x all
André R.
Sunday 09 September 2007 1:31:13 pm
Why would you want to undefine a variable that is not defined??Are you talking about undefine a variable if it is defined? like this:
{if is_set( $my_var )} {undef $my_var} {/if}
is_set:http://ez.no/doc/ez_publish/technical_manual/3_9/reference/template_operators/variable_and_type_handling/is_set
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Sunday 09 September 2007 2:19:49 pm
Yes I want to do this but in the example at http://ez.no/doc/ez_publish/techn...rs/variable_and_type_handling/is_set
{def $whatever='We need more rocket fuel!'} {if is_set( $whatever )} It is set. {else} It is not set.{/if}
but $whatever has a value ... I want to know if the variable is defined. I don't want to know if variable has some value ...
Felix Laate
Sunday 09 September 2007 2:54:37 pm
But this is the excact function of the is_set operator, after all the doc reads:
Returns TRUE if the value of the provided variable is set.
Felix
Publlic Relations Manager Greater Stavanger www.greaterstavanger.com
Peter Putzer
Sunday 09 September 2007 3:53:34 pm
Unfortunately, is_set() returns false if the value of the inspected variable is false. For most common applications (checking whether a variable is set before either using its value or a default), first_set() is the proper workaround.
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