1<documentation title="Language Construct Whitespace"> 2 <standard> 3 <![CDATA[ 4 The php constructs echo, print, return, include, include_once, require, require_once, and new should have one space after them. 5 ]]> 6 </standard> 7 <code_comparison> 8 <code title="Valid: echo statement with a single space after it."> 9 <![CDATA[ 10echo<em> </em>"hi"; 11]]> 12 </code> 13 <code title="Invalid: echo statement with no space after it."> 14 <![CDATA[ 15echo<em></em>"hi"; 16]]> 17 </code> 18 </code_comparison> 19</documentation> 20