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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 |
|---|---|
| 6285 | * (256 megabytes of memory) or the original `memory_limit` php.ini value if |
| 6286 | * this is higher. |
| 6287 | * |
| 6288 | * @since 3.0.0 |
| 6289 | * @since 4.6.0 The default now takes the original `memory_limit` into account. |
| 6290 | * |
| 6291 | * @param int|string $filtered_limit The maximum WordPress memory limit. Accepts an integer |
| 6292 | * (bytes), or a shorthand string notation, such as '256M'. |
| 6293 | */ |
| 6294 | $filtered_limit = apply_filters( 'admin_memory_limit', $filtered_limit ); |
| 6295 | break; |
| 6296 | |
| 6297 | case 'image': |
| 6298 | /** |
| 6299 | * Filters the memory limit allocated for image manipulation. |
| 6300 | * |
| 6301 | * @since 3.5.0 |
| 6302 | * @since 4.6.0 The default now takes the original `memory_limit` into account. |
| 6303 | * |