if statement - PHP operators problems -

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i building php script. 1 form min_salary , max_salary. trying both of them string in salary variable 

$salary = "min_salary max_salary";

if min salary not specified should set 0, if max salary not specified should set *.

i have written below code not getting when either of fields not provided.

$salary = (isset($data['min_salary']) ? $data['min_salary'] : 0) .' '. (isset($data['max_salary']) ? $data['max_salary']:'*');

also don't want use if else statements.

this line produce code without using if/else statements (even though ternery operator syntactic sugar around if/else statements)

$salary = max(0,$data['min_salary']) . ' ' . ($data['max_salary'] > 0 ? $data['max_salary'] : '*');

you don't want same scripting both values 1 should fallback 0 , other *. problem isset():

(isset($data['min_salary']) ? $data['min_salary'] : 0)

is variable can set empty string $data = '' return true. i'd hazard not want happen.


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