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(PHP 4, PHP 5, PHP 7, PHP 8)
shm_put_var — Inserts or updates a variable in shared memory
shm_put_var() inserts or updates the
value with the given
key.
Warnings (E_WARNING level) will be issued if
shm is not a valid SysV shared memory
index or if there was not enough shared memory remaining to complete your
request.
shm
A shared memory segment obtained from shm_attach().
key
The variable key.
value
The variable. All variable types that serialize() supports may be used: generally this means all types except for resources and some internal objects that cannot be serialized.
成功时返回 true， 或者在失败时返回 false。
