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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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141 | * |
142 | * @param mixed $pre_option The value to return instead of the option value. This differs from |
143 | * `$default_value`, which is used as the fallback value in the event |
144 | * the option doesn't exist elsewhere in get_option(). |
145 | * Default false (to skip past the short-circuit). |
146 | * @param string $option Name of the option. |
147 | * @param mixed $default_value The fallback value to return if the option does not exist. |
148 | * Default false. |
149 | */ |
150 | $pre = apply_filters( 'pre_option', $pre, $option, $default_value ); |
151 |
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152 | if ( false !== $pre ) { |
153 | return $pre; |
154 | } |
155 |
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156 | if ( defined( 'WP_SETUP_CONFIG' ) ) { |
157 | return false; |
158 | } |
159 |
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