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if (strlen($foo) < 5) { echo 鈥淔oo is too short鈥?$ }
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38銆佸綋浣犻渶瑕佹椂锛屼綘鎬昏兘鎶婁唬鐮佸垎瑙ｆ垚鏂规硶銆?br>39銆佸敖閲忛噰鐢ㄥぇ閲忕殑PHP鍐呯疆鍑芥暟銆?br>40銆佸?鏋滃湪浠ｇ爜涓?瓨鍦ㄥぇ閲忚?楁椂鐨勫嚱鏁帮紝浣犲彲浠ヨ?冭檻鐢–鎵╁睍鐨勬柟寮忓疄鐜板畠浠???br>41銆佽瘎浼版?楠?profile)浣犵殑浠ｇ爜銆傛?楠屽櫒浼氬憡璇変綘锛屼唬鐮佺殑鍝?簺閮ㄥ垎娑堣?椾簡澶氬皯鏃堕棿銆俋debug璋冭瘯鍣ㄥ寘鍚?簡妫?楠岀▼搴忥紝璇勪及妫?楠屾?讳綋涓婂彲浠ユ樉绀哄嚭浠ｇ爜鐨勭摱棰堛??br>42銆乵od_zip鍙?綔涓篈pache妯″潡锛岀敤鏉ュ嵆鏃跺帇缂╀綘鐨勬暟鎹?紝骞跺彲璁╂暟鎹?紶杈撻噺闄嶄綆80%銆?br>43銆佸湪鍙?互鐢╢ile_get_contents鏇夸唬file銆乫open銆乫eof銆乫gets绛夌郴鍒楁柟娉曠殑鎯呭喌涓嬶紝灏介噺鐢╢ile_get_contents锛屽洜涓轰粬鐨勬晥鐜囬珮寰楀?锛佷絾鏄??娉ㄦ剰file_get_contents鍦ㄦ墦寮?涓?涓猆RL鏂囦欢鏃跺?欑殑PHP鐗堟湰闂??锛?br>44銆佸敖閲忕殑灏戣繘琛屾枃浠舵搷浣滐紝铏界劧PHP鐨勬枃浠舵搷浣滄晥鐜囦篃涓嶄綆鐨勶紱
45銆佷紭鍖朣elect SQL璇?彞锛屽湪鍙?兘鐨勬儏鍐典笅灏介噺灏戠殑杩涜?Insert銆乁pdate鎿嶄綔(鍦╱pdate涓婏紝鎴戣?鎭舵壒杩?锛?br>46銆佸敖鍙?兘鐨勪娇鐢≒HP鍐呴儴鍑芥暟锛堜絾鏄?垜鍗翠负浜嗘壘涓狿HP閲岄潰涓嶅瓨鍦ㄧ殑鍑芥暟锛屾氮璐逛簡鏈?彲浠ュ啓鍑轰竴涓?嚜瀹氫箟鍑芥暟鐨勬椂闂达紝缁忛獙闂??鍟婏紒锛夛紱
47銆佸惊鐜?唴閮ㄤ笉瑕佸０鏄庡彉閲忥紝灏ゅ叾鏄?ぇ鍙橀噺锛氬?璞?杩欏ソ鍍忎笉鍙?槸PHP閲岄潰瑕佹敞鎰?鐨?闂??鍚э紵)锛?br>48銆佸?缁存暟缁勫敖閲忎笉瑕佸惊鐜?祵濂楄祴鍊硷紱
49銆佸湪鍙?互鐢≒HP鍐呴儴瀛楃?涓叉搷浣滃嚱鏁扮殑鎯呭喌涓嬶紝涓嶈?鐢ㄦ?鍒欒〃杈惧紡锛?br>50銆乫oreach鏁堢巼鏇撮珮锛屽敖閲忕敤foreach浠ｆ浛while鍜宖or寰?幆锛?br>51銆佺敤鍗曞紩鍙锋浛浠ｅ弻寮曞彿寮曠敤瀛楃?涓诧紱
52銆佲?滅敤i+=1浠ｆ浛i=i+1銆傜?鍚坈/c++鐨勪範鎯?紝鏁堢巼杩橀珮鈥濓紱
53銆佸?global鍙橀噺锛屽簲璇ョ敤瀹屽氨unset()鎺夛紱
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