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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 |
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166 | * Filters the original content of the email. |
167 | * |
168 | * Give Post-By-Email extending plugins full access to the content, either |
169 | * the raw content, or the content of the last quoted-printable section. |
170 | * |
171 | * @since 2.8.0 |
172 | * |
173 | * @param string $content The original email content. |
174 | */ |
175 | $content = apply_filters( 'wp_mail_original_content', $content ); |
176 |
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177 | if ( false !== stripos($content_transfer_encoding, "quoted-printable") ) { |
178 | $content = quoted_printable_decode($content); |
179 | } |
180 |
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181 | if ( function_exists('iconv') && ! empty( $charset ) ) { |
182 | $content = iconv($charset, get_option('blog_charset'), $content); |
183 | } |
184 |
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