php in_array() or array_search() not working [dupl

问题:

This question already has answers here:

PHP in_array isn't finding a value that is there (3 answers)

Closed 6 years ago.

I am using a simple php script to look for an element in an array like

    $restricted = array('root/base', 'root2' ); 
    print_r($restricted);
    if( array_search('root/base', $restricted) ){
        echo "1";
    } else {
        echo "0";
    }

But I am always getting the following output

Array ( [0] => root/base [1] => root2 ) 0

This means that the array_search is failing to find the element in the given array. Can anybody show some light on whats happening?

I tried to replace array_search() with in_array() also. But that too returned the same error.

回答1:

From PHP DOC

array_search — Searches the array for a given value and returns the corresponding key if successful

The index is 0 that is why you think its fails

Use

array_search('root/base', $restricted) !== false