How can i insert if statement to variable in php [closed] - php

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I'm trying to make a dynamic tab with PHP. please can someone help me out just need to filter where the category parent = 0.
$parent_category_html.= '<span class="'.$current_tab.'"><a id="tab-'
. $category['id'].'-link" href="#tab-'.$category['id']
. '" role="tab" aria-selected="false" aria-controls="tab-1" class="tab-link">'
. **$category['title'] is it possible to put an if statement here to filter the title where parent = 0**
. '</a>

Answer 1

From comments on the question, it sounds like what you're asking is:
How can I conditionally include a value in my string?
For that you'd use the ternary conditional operator. The operation itself would look like this:
$parent == 0 ? $category['title'] : ''
It essentially means:
If $parent equals 0, $category['title'], else empty string
The whole operation resolves to the resulting value, so you can wrap the whole operation in parentheses and drop it anywhere you would a variable. So something like this:
$parent_category_html.= 'your various HTML code...'
. ($parent == 0 ? $category['title'] : '')
. 'the rest of your HTML code...';

Answer 2

You can add if statement before:
if (statement)
$parent_category_html .= '...';
or try to use ternary operator
$parent_category_html .= "<div>" . ($condition ? 'output if true' : 'output if false') . "</div>";
$parent_category_html.= '<span class="'.$current_tab.'"><a id="tab-' . $category['id'].'-link" href="#tab-'.$category['id'] . '" role="tab" aria-selected="false" aria-controls="tab-1" class="tab-link">';
if ($pareent_id ==0) {
$parent_category_html.= '...';
}
$parent_category_html.= '</a>';