<?php
$string = '[to_custom_font family="Lato;900italic" decoration="" style="normal"]Content[/to_custom_font] //parent shortcode
[to_section attr="" attr3=""]
[to_custom_font family="Lato;900italic" decoration="" style="normal"]Content[/to_custom_font]//child shortcode
[/to_section]';
foreach ($matches[1] as $match) {
echo $match . "\n";
}
?>
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