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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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140 | } |
141 |
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142 | /** |
143 | * Filters whether the request should be treated as coming from a mobile device or not. |
144 | * |
145 | * @since 4.9.0 |
146 | * |
147 | * @param bool $is_mobile Whether the request is from a mobile device or not. |
148 | */ |
149 | return apply_filters( 'wp_is_mobile', $is_mobile ); |
150 | } |
151 |
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