| __halt_compiler() | abstract | and | array() | as |
| break | callable (as of PHP 5.4) | case | catch | class |
| clone | const | continue | declare | default |
| die() | do | echo | else | elseif |
| empty() | enddeclare | endfor | endforeach | endif |
| endswitch | endwhile | eval() | exit() | extends |
| final | finally (从 PHP 5.5 开始) | for | foreach | function |
| global | goto (从 PHP 5.3 开始) | if | implements | include |
| include_once | instanceof | insteadof (从 PHP 5.4 开始) | interface | isset() |
| list() | namespace (从 PHP 5.3 开始) | new | or | |
| private | protected | public | require | require_once |
| return | static | switch | throw | trait (从 PHP 5.4 开始) |
| try | unset() | use | var | while |
| xor | yield (从 PHP 5.5 开始) |
| __CLASS__ | __DIR__ (从 PHP 5.3 开始) | __FILE__ | __FUNCTION__ | __LINE__ |
| __METHOD__ | __NAMESPACE__ (从 PHP 5.3 开始) | __TRAIT__ (从 PHP 5.4 开始) |
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