usephul
Table of Contents
Namespaces
Constants
- E_EVERYTHING = 0x7fffffff
- This mask matches every possible past and future PHP error level.
Functions
- array_interchange() : array<string|int, mixed>
- Interchange the values of two elements of an array.
- array_remap() : array<string|int, mixed>
- Applies a (generator) callback to the elements of a given array, allowing the remapping of its keys in the process.
- array_zip() : array<string|int, array<string|int, TValue>>
- Perform a zip operation on multiple arrays.
- class_parents_uses() : array<class-string, class-string>|false
- Return the traits used by the parent classes of the given class.
- class_parents_traits_uses() : array<class-string, class-string>|false
- Return the traits used by the parent classes of the given class, recursively.
- class_traits_uses() : array<class-string, class-string>|false
- Return the traits used by the given class or trait, recursively.
Constants
E_EVERYTHING
This mask matches every possible past and future PHP error level.
public
mixed
E_EVERYTHING
= 0x7fffffff
Functions
array_interchange()
Interchange the values of two elements of an array.
array_interchange(array<string|int, mixed> $array, TKey $key1, TKey $key2) : array<string|int, mixed>
If a key doesn't exist in the array, then the other key will be set
to null, and a warning will be thrown.
Parameters
- $array : array<string|int, mixed>
- $key1 : TKey
- $key2 : TKey
Return values
array<string|int, mixed>array_remap()
Applies a (generator) callback to the elements of a given array, allowing the remapping of its keys in the process.
array_remap(callable(TKey $key, TValue $value): mixed $callback, array<string|int, mixed> $array) : array<string|int, mixed>
array_remap() returns an array containing the results of applying a callback with the corresponding key and value of array used as arguments.
If callback is a generator function,
then it's possible to provide a new key for the resulting array element using
yield from $key => $value.
If the same key is yielded more than once, then the later yield will override the previous one.
Parameters
- $callback : callable(TKey $key, TValue $value): mixed
-
A callable to run for each key-value pair in the array.
- $array : array<string|int, mixed>
Return values
array<string|int, mixed> — Returns an array containing the results of applying the
callback* function to the corresponding key-value pair of array* used as arguments for the callback.
array_zip()
Perform a zip operation on multiple arrays.
array_zip(array<string|int, TValue> $array, array<string|int, TValue> ...$arrays) : array<string|int, array<string|int, TValue>>
Parameters
- $array : array<string|int, TValue>
-
An array to zip.
- $arrays : array<string|int, TValue>
-
Supplementary list of array arguments to zip.
Return values
array<string|int, array<string|int, TValue>> —Returns an array whose elements are each an array holding the elements of the input arrays of the same index.
class_parents_uses()
Return the traits used by the parent classes of the given class.
class_parents_uses(object|string $object_or_class[, bool $autoload = true ]) : array<class-string, class-string>|false
This function returns an array with the names of the traits that the parents of the given object_or_class use.
Parameters
- $object_or_class : object|string
-
An object or class name.
- $autoload : bool = true
-
Whether to autoload if not already loaded.
Return values
array<class-string, class-string>|false —An array on success, or false when the class doesn't exist.
class_parents_traits_uses()
Return the traits used by the parent classes of the given class, recursively.
class_parents_traits_uses(object|string $object_or_class[, bool $autoload = true ]) : array<class-string, class-string>|false
This function returns an array with the names of the traits that the parent classes of the given object_or_class uses, including traits used within those traits.
Parameters
- $object_or_class : object|string
-
An object or class name.
- $autoload : bool = true
-
Whether to autoload if not already loaded.
Return values
array<class-string, class-string>|false —An array on success, or false when the class doesn't exist.
class_traits_uses()
Return the traits used by the given class or trait, recursively.
class_traits_uses(object|string $object_or_class[, bool $autoload = true ]) : array<class-string, class-string>|false
This function returns an array with the names of the traits that the given object_or_class uses, including traits used by those traits, recursively. This does however not include any traits used by a parent class.
Parameters
- $object_or_class : object|string
-
An object, class name or trait name.
- $autoload : bool = true
-
Whether to autoload if not already loaded.
Return values
array<class-string, class-string>|false —An array on success, or false when the class doesn't exist.