在单引号字符串中包含变量的语法

Question

Sorry for the trivial post, but I cannot figure this out on my own.

So I am basically appending a div and I need the maximum-length class to have a PHP variable like maximum-length-$max but I cannot figure out the syntax I need to use.

I have tried what is done before: '.$max.' ,but this does not work.

$addressFields .= '<div style="position: relative"><input type="text" title="'.$this->__('Street Address '.($_i+1)).'" name="billing[street]['.$_i.']" id="billing:street'.($_i+1).'" value="'.$dataHelper->clearDash($this->getQuote()->getBillingAddress()->getStreet($_i+1)).'" class="'.(($_i == 0)? 'required-entry ' : ''). 'input-text validate-address-lenght maximum-length-$max />';

Answer 1

Try to close ' before and after you varable. Try following code:

$addressFields .= '<div style="position: relative"><input type="text" title="'.$this->__('Street Address '.($_i+1)).'" name="billing[street]['.$_i.']" id="billing:street'.($_i+1).'" value="'.$dataHelper->clearDash($this->getQuote()->getBillingAddress()->getStreet($_i+1)).'" class="'.(($_i == 0)? 'required-entry ' : ''). 'input-text validate-address-lenght maximum-length-'.$max.'" />';