The following IF statement causes ZendFramework to error (with a blank screen). PhpStorm indicates expected variable with a red indicator after ('page_reference'). Is there a way I may execute this IF statement without causing an error?
if ( isset( $this->params()->fromRoute('page_reference') ) ) {
} else {
}
分享 As you can see in php documentation isset is meant to be used in a variable context.
Warning isset() only works with variables as passing anything else will result in a parse error. For checking if constants are set use the defined() function.
In this case it's possible to solve this in a simple way:
if ( $this->params()->fromRoute('page_reference') !== null ) {
} else {
}
Notice, the second parameter of fromRoute is $default = null, and can be used to pass the expected value when the 'page_reference' is not defined.
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