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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 |
|---|---|
| 4019 | /** |
| 4020 | * Filters the maximum upload size allowed in php.ini. |
| 4021 | * |
| 4022 | * @since 2.5.0 |
| 4023 | * |
| 4024 | * @param int $size Max upload size limit in bytes. |
| 4025 | * @param int $u_bytes Maximum upload filesize in bytes. |
| 4026 | * @param int $p_bytes Maximum size of POST data in bytes. |
| 4027 | */ |
| 4028 | return apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes ); |
| 4029 | } |
| 4030 | |
| 4031 | /** |
| 4032 | * Returns a WP_Image_Editor instance and loads file into it. |
| 4033 | * |
| 4034 | * @since 3.5.0 |
| 4035 | * |
| 4036 | * @param string $path Path to the file to load. |
| 4037 | * @param array $args Optional. Additional arguments for retrieving the image editor. |