value php array function sequence array_values functions and methods to obtain the value of array elements

array_values() Definition and Usage
array_keys() function returns a new array containing all the keys in the array.
If the second parameter is provided, only the key name with the key value is returned.
If the strict parameter is specified as true, PHP will use equality comparison (===) to strictly check the data type of the key value.
Syntax
array_keys(array,value)
Parameter Description
array Required. Specifies the input array.
value optional. The index (key) of the specified value.
strict optional. Used with the value parameter. Possible values:
true - Returns the key with the specified value based on the type.
false - default value. Does not depend on type.
Example 1

Copy the codeThe code is as follows:

$a=array("a"=>"Horse","b"=>"Cat","c" =>"Dog");
print_r(array_keys($a));
?>

Output:
Array ( [0] => a [1] => b [2] => c)
Example 2
Use value parameter:

Copy the codeThe code is as follows:

$a=array("a"=>"Horse","b"=> "Cat","c"=>"Dog");
print_r(array_keys($a,"Dog"));
?>

Output:
Array ( [0] => c)
Example 3
Use strict parameter (false):

Copy codeThe code is as follows:

$a=array(10,20,30,"10");
print_r(array_keys( $a,"10",false));
?>

Output:
Array ( [0] => 0 [1] => 3 )
Example 4
Use strict parameter (true):

Copy codeThe code is as follows:

$a=array(10,20,30,"10");
print_r(array_keys($a,"10",true));
?>

Output:
Array ( [0] => 3)

The above introduces the function and method of array_values in the value php array function sequence to obtain the value of the array element, including the content of value. I hope it will be helpful to friends who are interested in PHP tutorials.