I am using Codeigniter framework of PHP and trying to extract keywords from the page. The complete code for reference can be seen here. It is not ready-made though.
The issue is due to the array function in the following line:
$keywordCounts = array_count_values( $words );
The error message being displayed is as follows:
A PHP Error was encountered
Severity: Warning
Message: array_count_values() [function.array-count-values]: Can only count STRING and INTEGER values!
EDITED: The array $words for reference can be found here.
There are no special symbols or invalid characters to my knowledge in the $words array. Hyphens and periods are not read by the function or is there some other issue ?
you have null values in your array. you have to replace them before working with array_count_values like this:
$x = array('s'=>'ss', 'a',4 , 'sss' => null);
$ar = array_replace($x,array_fill_keys(array_keys($x, null),''));
$v = array_count_values($ar);
var_dump($v);
which will result:
array (size=4)
'ss' => int 1
'a' => int 1
4 => int 1
'' => int 1
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