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Numeric Drop-down With PHP ranges

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Here is an easy way to generate form numeric drop-down with ranges. $form = new Zend_Form(); $ranges = array( range(1, 20, 1) , range(30, 100, 10) , range(200, 1000, 100) ); $a = array(); foreach ( $ranges as $range ) { foreach ( $range as $r ) { $a[$r] = $r; } } $form->addElement('select', 'quantity', array( 'label' => 'Quantity' , 'required' => false , 'class' => 'form-control' , 'multiOptions' => array( '' => '--Select--' ) + $a )); Please note that the ranges are with different steps. Here is the result: