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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 |
---|---|
1226 |
|
1227 | if ( 'description' == $field ) |
1228 | $value = esc_html( $value ); // textarea_escaped? |
1229 | else |
1230 | $value = esc_attr($value); |
1231 | } else if ( 'db' == $context ) { |
1232 | if ( $prefixed ) { |
1233 | $value = apply_filters("pre_{$field}", $value); |
1234 | } else { |
1235 | $value = apply_filters("pre_user_{$field}", $value); |
1236 | } |
1237 | } else { |
1238 | // Use display filters by default. |
1239 | if ( $prefixed ) |
1240 | $value = apply_filters($field, $value, $user_id, $context); |
1241 | else |
1242 | $value = apply_filters("user_{$field}", $value, $user_id, $context); |
1243 | } |
1244 |
|