how to show limited content of page in wordpress - wordpress

Question

I have code the displaying content and `title' of page.I want to show only 150 words of that particular page content.
Here is my code
<?php
$args = array(
'include' => 1319,
'post_type' => 'page',
'post_status' => 'publish'
);
$mypages = get_pages($args);
foreach($mypages as $page)
{
$content = $page->post_content;
$content = apply_filters('the_content', $content);
?>
<div class="page_botheadingtop">
<?php echo $page->post_title ?>
</div>
<div class="page_botheadingmiddle">
<?php echo $page->post_content; ?>
</div>
<div class="page_botheadingbottom">
Read More..
</div>
<?php
}
?>
This code showing all content of page that have id 1319.I want to disply only 150 word please provide me the suggestion.
I shall be very thankful to you
I am waiting for your reply
thanks

Answer 1

Use
<?php
the_excerpt_max_charlength(140);
function the_excerpt_max_charlength($charlength) {
$excerpt = get_the_excerpt();
$charlength++;
if ( mb_strlen( $excerpt ) > $charlength ) {
$subex = mb_substr( $excerpt, 0, $charlength - 5 );
$exwords = explode( ' ', $subex );
$excut = - ( mb_strlen( $exwords[ count( $exwords ) - 1 ] ) );
if ( $excut < 0 ) {
echo mb_substr( $subex, 0, $excut );
} else {
echo $subex;
}
echo '[...]';
} else {
echo $excerpt;
}
}
?>
Or
<?php
$my_excerpt = get_the_excerpt();
if ( $my_excerpt != '' ) {
// Some string manipulation performed
}
echo $my_excerpt; // Outputs the processed value to the page
?>