Change this to full content?

Hi. I am new to wordpress, and I love this one theme, but it blog style doesn’t show full content of the recent post. Can anyone help me instead of display few line of code in the latest post into full content article?

I found the code here

function _latest_posts3 ( $options )
	{

		$element_size = zn_get_size( $options['_sizer'] );

	?>

		<div class="<?php echo $element_size['sizer'];?>">
			<div class=" latest_posts style2">
				<h3 class="m_title"><?php echo $options['lp_title'];?></h3>
				<?php
					if ( !empty( $options['lp_blog_page'] ) ) {
						echo '<a href="'.$options['lp_blog_page'].'" class="viewall">'. __("VIEW ALL",THEMENAME).' -</a>';
					}
				?>
				<ul class="posts">
				<?php

					global $post;

					// Check what categories were selected..if any
					if ( isset ( $options['lp_blog_categories'] ) ) {
						$blog_category = implode(',',$options['lp_blog_categories']);
					}
					else {
						$blog_category = '';
					}

					// HOW MANY POSTS
					if ( isset ( $options['lp_num_posts'] ) ) {
						$num_posts = $options['lp_num_posts'];
					}
					else {
						$num_posts = '2';
					}

					// Start the query
					query_posts( array ( 'posts_per_page' => $num_posts , 'cat' => $blog_category ) );

					// GET THE NUMBER OF TOTAL POSTS RETURNED
					global $wp_query;

					// Start the loop
					while( have_posts() ){

						the_post(); 

						echo '<li class="post">';	

							echo '<div class="details">';
							echo '<span class="date">';
								the_time('d/m/Y');
							echo '</span>';
							echo '<span class="cat">'.__( 'in ', THEMENAME );
								the_category(", ");
							echo '</span>';
							echo '</div>';

							// TITLE
							echo '<h4 class="title"><a href="'.get_permalink().'">'.get_the_title().'</a></h4>';	

							// TEXT
							echo '<div class="text">';
								$excerpt = get_the_excerpt();
								$excerpt = strip_shortcodes($excerpt);
								$excerpt = strip_tags($excerpt);
								$the_str = mb_substr($excerpt, 0, 350);
								echo $the_str.'...';

							echo '</div>';

						echo '</li>';
					}
					wp_reset_query();

				?>

				</ul>
			</div><!-- end // latest posts style 2 -->
		</div>

	<?php
	}