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- ?? ?? ??? :`substr ()`vs.`mb_substr ()```Mb_substr ()``````MB_Substr ()````MB_SUBST ()````MB_SUBST ()`
- useubstr () forascii-onlystringsorbyte-leveloperationstomaximizespeed.2.usemb_substr () pormultibytextlikeuser-genderatedorinationalcontenttoenseRecorrecrectness.3. theperformanceCoscostofmb_substr (~ 3 – 4xhigherduetoterctercered.4optiming-priminged)
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- ??? ???? ??? ???? ?? PDO ?? MySQLI? ??? ???? ??????. 2. Appartmentication ???? ???? ?? ?? ?? ? ?? ??? ???? ?? ???? ??? ????? Password_hash () ? Password_Verify ()? ??????. 3. HTTPS? ?? ???? ???? ??? ??? ??? ? ???? ??? ?????? ?? ?? ?? ? ??; 4. ???? ???? ?? ??? ??, PHP ??? ??????, ???? ??? ????, ?? ?? ??? ??????. 5. ??? ????? ?? XSS? ???? ?? htmlSpecialchars () ?? json_encode ()? ???? CSP? ??????. 6. ??? ??? ?? ???? ?????
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- Array_Slice () TreatsNullOffSetSas0, Clampsout-of-BoundsOffSetStorEturnEmptyArraySorfullarrays ? HandlesNullLangas "TotheEnd"; substr () CastSnullOffSetSto0ButreTurnsfalSeonout-of-boundsorInvalidOffSets, NullOffSetIngr
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- `substr ()`: ??? ??? ??????? ?? ?? ??? ?
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- `substr ()`: php?? ?? ??? ??? ?? ??
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- ?? ?? ?? ??? :`intdiv ()`vs. ??? ??
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- `mixed`?? 'void'? : PHP ?? ?? ??? ?? ?? ???
- returnTypesInphPimProveCoderELiabilityAndClarityBySpecifying whatAfunctionMustreturn.2.useBasicTypesLikestring, Array, OrdateTimetOenforceCorrecReturnValuesandcatchErrorsearly.3. ApplyNullAbleTyPesswitHe (? :?
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- PHP ???? . ??? ?? 760 2025-07-26 09:54:01
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- PHP ?? ?? ??? : CI/CD ??? ??? PHP ??
- Chooseaci/cdplatform-likegithubactionsorgitlabcififortightlescontrolintegrationandminimalinfrastructure; 2.defineaconsistentphpenvironmentusingcontainerizationwithimageslikephp : 8.2-cliorcomposer : 8.2-cliorcompose? ?? ??? ?????
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