Coercion code paths

[iluuu1994]

All these functions use the coercion of zvals to string. We need to figure out where the deprecation is relevant (where it can occur) and where it is intended.

• zval_get_string_func
  • php_implode
    • implode (implode(['foo', true, false]))
  • zend_get_callable_name_ex
  • zend_try_compile_cv ($foo->{true} = 'bar')
  • zend_ini_add_string Only used in the INI file parser
  • concat_function
    • ZEND_CONCAT
    • zend_compile_encaps_list
    • zend_binary_op
    • zend_binary_assign_op_typed_ref
    • zend_binary_assign_op_typed_prop
    • get_binary_op
  • zval_get_string
    • zend_is_assign_to_self
    • zend_compile_func_defined
    • zend_handle_encoding_declaration
    • Exception::getFile
    • Exception::getMessage
    • Exception::__toString
    • zend_exception_error
    • zend_exception_uncaught_error
    • _zval_get_string
    • ZEND_CAST
    • zend_optimizer_eval_cast
  • zval_get_tmp_string
    • zend_throw_non_object_error
    • zend_wrong_property_read
    • zend_fetch_property_address
    • zend_fetch_static_property_address_ex
    • zend_get_function_declaration
    • zend_ini_add_string
    • string_compare_function_ex
    • string_compare_function
    • string_case_compare_function
    • string_locale_compare_function
    • ZEND_ISSET_ISEMPTY_VAR
    • zend_print_zval
    • php_formatted_print
  • _zval_get_string_func
  • zend_make_printable_zval
  • zend_print_flat_zval_r_to_buf
    • print_flat_hash
    • zend_print_flat_zval_r
  • zend_print_zval_r_to_buf
    • print_hash
    • zend_print_zval_r_to_str
  • ZEND_ECHO
  • ZEND_FAST_CONCAT
  • ZEND_ROPE_INIT
  • ZEND_ROPE_ADD
  • ZEND_ROPE_END
• zval_try_get_string_func
  • zend_assign_to_string_offset
    • ZEND_ASSIGN_DIM
  • _try_convert_to_string
    • try_convert_to_string
  • zval_try_get_string
  • zval_try_get_tmp_string
• convert_to_string
  • file_put_contents
  • settype
  • php_unserialize_with_options
  • zend_parse_arg_str_weak
  • zend_compile_simple_var_no_cv
  • zend_delayed_compile_dim
  • zend_delayed_compile_prop
  • zend_compile_static_prop
  • zend_compile_global_var
  • zend_compile_unset
  • zend_compile_binary_op
  • zend_compile_isset_or_empty
  • zend_compile_encaps_list
  • zend_optimize_block (ZEND_ECHO, ZEND_FAST_CONCAT)
  • zend_optimizer_pass1 (ZEND_FAST_CONCAT, ZEND_ASSIGN_OP)
  • TO_STRING_NOWARN

[Girgias]

For zend_get_callable_name_ex() I don't think it can ever be anything else other than string/array/object, probably would want to replace the default branch.
Spoiler I was wrong