array flip - PHP array_flip() function -

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i updated server on work. have got error : "warning: array_flip() expects parameter 1 array, null given in..." know how fix ?

thanks lot contribution.

most updated server magic quotes set on off

this id because returning value false or not returning true or 1 debug code .you not suplling array_flip() have supply array

example:

$arr = array("a" => 3, "b" => 1, "c" => 2); $arr = array_flip($arr); print_r($arr);

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