Keyword Analysis & Research: php check if variable is null or empty

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
php check if variable is null or empty	0.35	0.8	6537	74	38
php	0.31	0.4	4900	4	3
check	1.34	0.2	4689	70	5
if	1.79	0.4	4855	80	2
variable	1.4	0.6	4561	60	8
is	1.55	0.4	4670	13	2
null	1.83	0.5	2420	55	4
or	0.32	0.1	6955	77	2
empty	0.57	0.9	3548	65	5

Keyword	CPC	PCC	Volume	Score
php check if variable is null or empty	1.26	0.7	1082	14
check if null or empty php	0.16	0.1	8578	37
php check if variable is empty	1.89	0.2	1249	1
php check null or empty	1.69	0.5	4427	69
php if variable is null	0.49	0.4	887	100
php check for null or empty string	1.16	0.1	9831	44
php check if value is null	1.65	0.5	5670	69
php if null or empty	1.01	0.3	9730	30
php if variable is not empty	1.57	0.6	2580	50
if variable is empty php	1.03	0.5	9728	61