.. toctree:: :maxdepth: 1 :caption: Contents: tips/not_set_but_exists.rst tips/sorting_enum.rst tips/hypot.rst tips/spaceship_always_false.rst tips/inverted-spaceship.rst tips/isset-empty-valued.rst tips/comparing-arrays.rst tips/mixed_compatibility.rst tips/comma_in_number.rst tips/arg_renaming.rst tips/htmlemtities_failing.rst tips/static_arrow_function.rst tips/defined.rst tips/expm1.rst tips/isset_class_constant.rst tips/preg_split.rst tips/compare_nan.rst tips/array_unique_and_enum.rst tips/tree-iterator.rst tips/speed_up_write_to_disk.rst tips/maxmemory.rst tips/parent_operator.rst tips/stuttering.rst tips/make_it_work.rst tips/crazy_const_type.rst tips/http_wrapper.rst tips/cast_but_not_cast.rst tips/hexadecimal_separator.rst tips/echo-comma.rst tips/errorNumber.rst tips/put_the_cast_where.rst tips/unpacking_single_array.rst tips/abstract_or_not.rst tips/int_and_ant.rst tips/cast_in_const.rst tips/global_overwrite.rst tips/property_hook_default_values.rst tips/static_and_not_static.rst tips/intval.rst tips/easy_map.rst tips/returningVoid.rst tips/casting_enum.rst tips/dynamic_class_constant_edges.rst tips/dynamic_enum_cases.rst tips/yield_and_keys.rst tips/array-callaback-index.rst tips/closureCreation.rst tips/fatal_error_on_coalesce.rst tips/weakmap.rst tips/parent_in_function.rst tips/isset_and_the_fatal_error.rst tips/allDereferencements.rst tips/noPropertyBelowMininum.rst tips/cantBeBackCompatible.rst tips/arrowFunctionsImportVariables.rst tips/neverIsAlwaysCovariant.rst tips/neverFunctionArrow.rst tips/noExitRewrite.rst tips/aliasConflicts.rst tips/notAllIncrementStrings.rst tips/get_class_or_class.rst tips/noBindingButOriginal.rst tips/infinite_foreach.rst tips/who_modifies_this.rst tips/mixed_is_not_no_type.rst tips/array_merge_recursive.rst tips/GLOBALS_is_not_defined.rst tips/cast_private_to_array.rst tips/property_in_interface.rst tips/bit_operation_on_string.rst tips/typed_variables.rst tips/type_and_reference.rst tips/chaining_spaceship.rst tips/parse_str_edge_cases.rst tips/closure_to_array.rst tips/list_does_not_type.rst tips/triple_plus_operator.rst tips/FunctionNameInAMethod.rst tips/quine.rst tips/named_parameter_in_an_array.rst tips/selfOnAClosure.rst tips/compatible_new_argument.rst tips/no_const_A.rst tips/http_build_query_enum.rst tips/cannot-initialy-modify-readonly.rst tips/ellipsisAndCoalesce.rst tips/namespace_namespace.rst tips/namespace_but_far.rst tips/no-hidden-nullable.rst tips/remove_last_item.rst tips/cancelling_native_function.rst tips/class_const_confusion.rst tips/compact_is_recursive.rst tips/no-final-parameter.rst tips/is_not_a_nan.rst tips/impossible_named_arguments.rst tips/func_get_args.rst tips/ellipsis_array_parameters.rst tips/named_parameter_inheritance.rst tips/invoke_on_new.rst tips/method_or_property.rst tips/no_more_class__.rst tips/method_not_property_name_must_be_string.rst tips/static_properties.rst tips/new_and_parenthesis.rst tips/fluent_function.rst tips/isset_on_expression.rst tips/constant_redefinition.rst tips/no-constant-in-string.rst tips/return_int_not_bool.rst tips/by_reference_errors.rst tips/call_function_with_strings.rst tips/non-empty-match.rst tips/named_sqlite3_in_memory.rst tips/variable_creation.rst tips/all_cases.rst tips/unicode_comments.rst tips/datetime_and_year.rst tips/escaped_regex.rst tips/every_anonymous_class.rst tips/instanceof_with_variable.rst tips/undefined_variable.rst tips/compatible-signature.rst tips/private_is_relaxed.rst tips/class_implements_no_more.rst tips/variadic_are_typed_and_defaulted.rst tips/array_column_to_hash.rst tips/array_is_custom.rst tips/array_is_not_an_array.rst tips/array_map_assoc.rst tips/array_map_to_the_max.rst tips/typed_array.rst tips/initialize_readonly_on_child.rst tips/silent_optimisation.rst tips/array_syntax_on_string.rst tips/no_force_object_to_string.rst tips/invoke_and_properties.rst tips/constructor_needed.rst tips/self-referencing-constants.rst tips/deanonymize-class.rst tips/noscream-on-ellipsis.rst tips/incompatible-promoted-readonlies.rst tips/where-is-the-semicolon.rst tips/self-as-attribute.rst tips/microtimes.rst tips/promoted_compatibility.rst tips/enum_are_not_linted.rst tips/sorting_with_minus.rst tips/override_with_interface.rst tips/send_to_generator.rst tips/php_integer_format.rst tips/compatible_interface.rst tips/no_cast_in_constant_expression.rst tips/self_invoking.rst tips/no_child_with_attribute.rst tips/dynamic_class_constant.rst tips/function_function.rst tips/match_multiple_values.rst tips/interface_constant_conflict.rst tips/foreach_skips_uninitialized.rst tips/cast_and_power.rst tips/attribute_without_class.rst tips/class_is_valid_class.rst tips/precision.rst tips/store_float_as_index.rst tips/case_insensitive_cast.rst tips/this_this.rst tips/no-type-but-string.rst tips/no_unknown_for_array_merge.rst tips/no-returntype-enforced.rst tips/as-as-as.rst tips/no_dnf_for_catch.rst tips/new_on_object.rst tips/unfinished_class.rst tips/yield_not_return_by_reference.rst tips/enum_exists.rst tips/no_semi_colon_in_sight.rst tips/glob_with_hidden_files.rst tips/file_append_contents.rst tips/array_reduce.rst tips/this_is_not_the_current_class.rst tips/class_constant_different_types.rst tips/no_change_to_this.rst tips/file_put_array.rst tips/get_the_generator.rst tips/redefine_native_functions.rst tips/static_cannot_call_non_static.rst tips/before_after.rst tips/cast_is_strong.rst tips/roman_loops.rst tips/finally_catches_exception.rst tips/abstract_again.rst tips/always_compatible_variadic.rst tips/yield_not_return.rst tips/try-catch-finally.rst tips/nullAsArray.rst tips/sensitiveParameter.rst tips/no_property_in_interface.rst tips/uncallable_function.rst tips/easy_wither.rst tips/array_is_full.rst tips/const_without_parenthesis.rst tips/cast_are_case_insensitive.rst tips/not_same_error.rst tips/when_space_matters.rst tips/array_array_array.rst tips/yield_cannot_never.rst tips/class_invasion_reciproque.rst tips/typed_by_enum.rst tips/reference_on_static.rst tips/scalar_types_are_unqualified.rst tips/array_append.rst tips/coalesce_is_null.rst tips/class_alias_alias.rst tips/mixed_and_no_type.rst tips/abstract_constant.rst tips/static_static_property.rst tips/attributes_for_all.rst tips/run_any_phar_file.rst tips/static_outside_method.rst tips/enum_case_comparisons.rst tips/all_static_curly_syntaxes.rst tips/no_empty_function.rst tips/while_i_--.rst tips/unexpected_keys.rst tips/recursive_yield.rst tips/documenting_parameter.rst tips/catch_is_optional.rst tips/void_parameter.rst tips/unset_properties.rst tips/multipleAliases.rst tips/plus_plus_minus_minus.rst tips/when_a_constant_is_impossible.rst tips/constant_are_mutable.rst tips/quick-dto.rst tips/stealth-generator.rst tips/quick_serialize.rst tips/clone_clone_clone.rst tips/readonly_and_private.rst tips/interface_exceptions.rst tips/exp_minus_one.rst tips/infinite_is_reachable.rst tips/squared_negative.rst tips/negating_a_variable.rst tips/numeric_separator_string.rst tips/confusing_identifier.rst tips/relaxed_syntax_with_const.rst tips/closure_to_call.rst tips/static_get_this.rst tips/array_intersect_uassoc_insensitive.rst tips/class_and_constants.rst tips/dont_forget_yield.rst tips/phptip-1.rst tips/foreach_same_keys.rst tips/battle_of_definitions.rst tips/variadic_all_yield.rst tips/refactor_str_pos.rst tips/is_a_and_instanceof.rst tips/export_properties.rst tips/cast_to_int.rst tips/returntypewillchange_for_all.rst tips/URL_as_comments.rst tips/coalesce_and_assignation.rst tips/missing_methods_are_fatal.rst tips/initialize_with_coalesce.rst tips/keys_are_integers.rst tips/fastest_stdclass_creation.rst tips/elephpant.rst tips/internal_static_call.rst tips/strict_types_exceptions.rst tips/playing_with_the_limit.rst tips/constructor_consistency.rst tips/object_is_not_a_type.rst tips/forgotten_throw.rst tips/keywords_in_namespaces.rst tips/variable_optimisation.rst tips/self_in_interface.rst tips/instanceof_class.rst tips/stdclass_tracking.rst tips/misplaced_parenthesis.rst tips/check_for_names.rst tips/int_back_to_negative.rst tips/not_all_strings.rst tips/recursive_arrow_function.rst tips/null_equal_false.rst tips/recursive_closure.rst tips/cast_precedence.rst tips/enum_as_name.rst tips/type_is_not_available.rst tips/namespace_stack.rst tips/catch_interfaces.rst