Online PHP editor | rfc for VWSHZ

@ 2013-08-16T07:41:53Z

<?php

echo '$formData = array();';
echo "\n";
$formData = array();
echo 'empty($formData[\'chain_id\']): ';
var_dump(empty($formData['chain_id']));
echo "\n";
echo '$formData[\'chain_id\'] === \'0\': ';
var_dump($formData['chain_id'] === '0');
echo "\n";
echo "\n";

echo '$formData[\'chain_id\'] = 0;';
echo "\n";
$formData['chain_id'] = 0;
echo 'empty($formData[\'chain_id]\'): ';
var_dump(empty($formData['chain_id']));
echo "\n";
echo '$formData[\'chain_id\'] === \'0\': ';
var_dump($formData['chain_id'] === '0');
echo "\n";
echo "\n";

echo '$formData[\'chain_id\'] = \'0\';';
echo "\n";
$formData['chain_id'] = '0';
echo 'empty($formData[\'chain_id]\'): ';
var_dump(empty($formData['chain_id']));
echo "\n";
echo '$formData[\'chain_id\'] === \'0\': ';
var_dump($formData['chain_id'] === '0');
echo "\n";
echo "\n";

echo '$formData[\'chain_id\'] = 1;';
echo "\n";
$formData['chain_id'] = 1;
echo 'empty($formData[\'chain_id\']): ';
var_dump(empty($formData['chain_id']));
echo "\n";
echo '$formData[\'chain_id\'] === \'0\': ';
var_dump($formData['chain_id'] === '0');
echo "\n";
echo "\n";

Output for git.master, git.master_jit, rfc.property-hooks: $formData = array(); empty($formData['chain_id']): bool(true) $formData['chain_id'] === '0': Warning: Undefined array key "chain_id" in /in/VWSHZ on line 10 bool(false) $formData['chain_id'] = 0; empty($formData['chain_id]'): bool(true) $formData['chain_id'] === '0': bool(false) $formData['chain_id'] = '0'; empty($formData['chain_id]'): bool(true) $formData['chain_id'] === '0': bool(true) $formData['chain_id'] = 1; empty($formData['chain_id']): bool(false) $formData['chain_id'] === '0': bool(false)

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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