#Php associative array adding key error archive
#Php associative array adding key error code

This seems working both on PHP 5.3 and PHP 5.6. (in actual code, the fields are specified dynamically and iterated in for-loop.) $params=array() $params=&$field1 $params=&$field2 array_unshift($params,'ss')

#Php associative array adding key error code

This code causes fatal error in PHP 5.4 and depending on server configuration it may not even be reported why.Ī workarround to allow pushing references to array is this: $params=array() array_push($params,&$field1) array_push($params,&$field2) array_unshift($params,'ss') Ĭall_user_func_array(array($Query,'bind_param'),$params) This function is needed for example to push parameters for MySql query: Think of Reference as a pointer in other languages.

There is problem with pushing references to array, introduced in PHP 5.4 - did someone decide it is not needed? (perhaps a native variant would be a good idea.) It would have been better if array_push would have returned the key of the item just added like the below function It does not give you the key of the item you just added, in numeric arrays you could do -1, you do however need to be sure that no associative key exists as that would break the assumption Unfortunately array_push returns the new number of items in the array which will result in an array that looks like this. Note that like array_push (but unlike $array =) the array must exist before the unary union, which means that if you are building an array in a loop you need to declare an empty array first. You can also, of course, append more than one element at once. If you want to add elements to the END of an associative array you should use the unary array union operator (+=) instead.

In many cases it won't matter if the array is not stored internally in the same order you added the elements, but if, for instance, you execute a foreach on the array later, the elements may not be processed in the order you need them to be. I can only assume that PHP sorts the array as elements are added to make it easier for it to find a specified element by its key later. might very well result in an array that looks like this. Rodrigo's suggestion is NOT guaranteed to append the new element to the END of the array. Rodrigo de Aquino asserted that instead of using array_push to append to an associative array you can instead just do.

#Php associative array adding key error archive

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