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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 |
|---|---|
| 6396 | * (256 megabytes of memory) or the original `memory_limit` php.ini value if |
| 6397 | * this is higher. |
| 6398 | * |
| 6399 | * @since 3.0.0 |
| 6400 | * @since 4.6.0 The default now takes the original `memory_limit` into account. |
| 6401 | * |
| 6402 | * @param int|string $filtered_limit The maximum WordPress memory limit. Accepts an integer |
| 6403 | * (bytes), or a shorthand string notation, such as '256M'. |
| 6404 | */ |
| 6405 | $filtered_limit = apply_filters( 'admin_memory_limit', $filtered_limit ); |
| 6406 | break; |
| 6407 | |
| 6408 | case 'image': |
| 6409 | /** |
| 6410 | * Filters the memory limit allocated for image manipulation. |
| 6411 | * |
| 6412 | * @since 3.5.0 |
| 6413 | * @since 4.6.0 The default now takes the original `memory_limit` into account. |
| 6414 | * |