在php中过滤数组中的特定列

Question

I am trying to filter a specific column in an array in php using the code below:

(strpos( 'meeting',$event['categories'] ) == false )

It is not working actually. An example of what [categories] hold is:

$event['categories'] = 'meeting;skype'

Thanks in advance!

Answer 1

You need to flip the arguments to strpos():

if (strpos($event['categories'],  'meeting') === false) {
    echo $event['categories'] . ' does not contain "meeting"';
}

Also, use strict comparison (=== vs ==), as meeting could be at the start of the string, and then strpos() would return 0, which would evaluate to false (which would be wrong in that case).

For reference, see:

• http://php.net/manual/en/function.strpos.php

For an example, see:

• https://3v4l.org/Ab4ud