return

(PHP 4, PHP 5, PHP 7)

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锟斤拷锟斤拷锟斤拷息锟斤拷锟斤拷锟斤拷值锟斤拷

Note: 注锟斤拷锟饺� return 锟斤拷锟斤拷锟皆结构锟斤拷锟斤拷锟角猴拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷没锟叫憋拷要锟斤拷锟斤拷锟脚斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷通锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟脚ｏ拷实锟斤拷锟斤拷也应锟矫诧拷锟矫ｏ拷锟斤拷锟斤拷锟斤拷锟皆斤拷锟斤拷 PHP 锟侥革拷锟斤拷锟斤拷

Note: 锟斤拷锟矫伙拷锟斤拷峁╋拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷牛锟斤拷锟绞憋拷锟斤拷锟� NULL锟斤拷锟斤拷锟斤拷锟斤拷锟� return 时锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷却锟斤拷没锟叫诧拷锟斤拷锟结导锟铰斤拷锟斤拷锟斤拷锟斤拷

Note: 锟斤拷锟斤拷锟斤拷锟矫凤拷锟斤拷值时锟斤拷远锟斤拷要使锟斤拷锟斤拷锟脚ｏ拷锟斤拷锟斤拷锟叫诧拷通锟斤拷只锟斤拷通锟斤拷锟斤拷锟矫凤拷锟截憋拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥斤拷锟斤拷锟斤拷锟斤拷使锟斤拷 return ($a); 时锟斤拷实锟斤拷锟角凤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟角憋拷锟绞� ($a) 锟斤拷值锟斤拷锟斤拷然锟斤拷锟斤拷时锟斤拷值也锟斤拷锟斤拷 $a 锟斤拷值锟斤拷锟斤拷