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[skip ci] Document HASH_ constants (#16806)

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Not all of these are straight-forward to understand.
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Ilija Tovilo 2024-11-18 19:28:15 +01:00 committed by GitHub
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13
Zend/zend_hash.h
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@ -30,12 +30,13 @@
#define HASH_KEY_IS_LONG 2
#define HASH_KEY_NON_EXISTENT 3
#define HASH_UPDATE (1<<0)
#define HASH_ADD (1<<1)
#define HASH_UPDATE_INDIRECT (1<<2)
#define HASH_ADD_NEW (1<<3)
#define HASH_ADD_NEXT (1<<4)
#define HASH_LOOKUP (1<<5)
#define HASH_UPDATE (1<<0) /* Create new entry, or update the existing one. */
#define HASH_ADD (1<<1) /* Create new entry, or fail if it exists. */
#define HASH_UPDATE_INDIRECT (1<<2) /* If the given ht entry is an indirect zval, unwrap it before writing to it. \
* When used with HASH_ADD, writing is allowed if the target zval is IS_UNDEF. */
#define HASH_ADD_NEW (1<<3) /* Used when the offset is known not to exist. */
#define HASH_ADD_NEXT (1<<4) /* Append to an array. (e.g. $array[] = 42;) */
#define HASH_LOOKUP (1<<5) /* Look up an existing entry, or create one with a NULL value. */
#define HASH_FLAG_CONSISTENCY ((1<<0) | (1<<1))
#define HASH_FLAG_PACKED (1<<2)