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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1758 | global $wpsmiliestrans; |
| 1759 | |
| 1760 | if ( count( $matches ) == 0 ) |
| 1761 | return ''; |
| 1762 | |
| 1763 | $smiley = trim( reset( $matches ) ); |
| 1764 | $img = $wpsmiliestrans[ $smiley ]; |
| 1765 | $smiley_masked = esc_attr( $smiley ); |
| 1766 | |
| 1767 | $src_url = apply_filters( 'smilies_src', includes_url( "images/smilies/$img" ), $img, site_url() ); |
| 1768 | |
| 1769 | return " <img src='$src_url' alt='$smiley_masked' class='wp-smiley' /> "; |
| 1770 | } |
| 1771 | |
| 1772 | /** |
| 1773 | * Convert text equivalent of smilies to images. |
| 1774 | * |
| 1775 | * Will only convert smilies if the option 'use_smilies' is true and the global |
| 1776 | * used in the function isn't empty. |