1<documentation title="Lowercase Keywords"> 2 <standard> 3 <![CDATA[ 4 All PHP keywords should be lowercase. 5 ]]> 6 </standard> 7 <code_comparison> 8 <code title="Valid: Lowercase array keyword used."> 9 <![CDATA[ 10$foo = <em>array</em>(); 11 ]]> 12 </code> 13 <code title="Invalid: Non-lowercase array keyword used."> 14 <![CDATA[ 15$foo = <em>Array</em>(); 16 ]]> 17 </code> 18 </code_comparison> 19</documentation> 20