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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 |
|---|---|
| 3833 | /** |
| 3834 | * Filters the maximum upload size allowed in php.ini. |
| 3835 | * |
| 3836 | * @since 2.5.0 |
| 3837 | * |
| 3838 | * @param int $size Max upload size limit in bytes. |
| 3839 | * @param int $u_bytes Maximum upload filesize in bytes. |
| 3840 | * @param int $p_bytes Maximum size of POST data in bytes. |
| 3841 | */ |
| 3842 | return apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes ); |
| 3843 | } |
| 3844 | |
| 3845 | /** |
| 3846 | * Returns a WP_Image_Editor instance and loads file into it. |
| 3847 | * |
| 3848 | * @since 3.5.0 |
| 3849 | * |
| 3850 | * @param string $path Path to the file to load. |
| 3851 | * @param array $args Optional. Additional arguments for retrieving the image editor. |