PHP构建思路

``` php
''}
$ret = '';
foreach ($arr as $key => $value) {
$ret .= "$value";
}
$ret .= '';
return $ret;
}
function omissible($text){
return "$text";
}
//由于可能用到多次，所以提取出来
$chart = '
table
chart
bar chart
pie chart
line chart
';
$given = omissible('given');
$conclude = '
see
conclude
';
$blahblah = '';
$striking = 'strikingdramatic';
$contrast = 'contrastdifference';
$number = select_from(array('number','proportion','percentage'));

echo "According to the $chart $given above, we can $conclude that "
."a $striking $contrast has taken place in the $number of $blahblah [from 20XX to 20XX]. "
."During the period, there has been a marked/steady increase/decrease in... from... to...,"
." while that of... witnessed a marked/steady increase/decrease/ reach a plateau at...";
?>
```