PHP ????
? ??????? ???? PHP? ????, ? ??? ??? ??? ???, ???? ?? ????? ???? ???.
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PHP ?? ??
???? ?? ??? : PHP ?? ???? ???
? ?? ?? ??? ?????. ?? ?? ???? ? ??; useedouble-quotedStringsfordynamicContentwithVariblesandescapesequences \ nor & dollar;
Aug 01, 2025 am 07:38 AM
????? King : HTML, JSON ? SQL ????? ?? ??? ?????.
forhtmloutput, applyContext-AwareEscaping : usehtmlentityOncodingfortextAttributes, andcombinewithJavaScriptEscapingInscrapingScrapingInscrapingScrapingInScrapingscrapingInscrapingscrapingInscrapingscrapingInscrapings;
Jul 28, 2025 am 04:43 AM
`addslashes ()`: ??? SQL ?? ????? ??? ?? ??
SQL ?? ??? ?? ??? ???? ???? ??? ?? ??? ?? ?? ? ? ?? ??? AddSlashes ()? ?? ? ? ????. ??? ??? (? : PDO ?? MySQLI? ?? ?? ??? ? ??)? ??? ??? ?? ???? ??? SQL ???? ???? ???? ? ???????. ???? ??? ??? ?? ?????? ? ?? ?? (? : real_escape_string ? ??? ?? ?? ??), ??? ?????? ?? ??? ?? ??, ?? ?? ??? ? ?? ??? ???? ?? ? ??? ???????.
Jul 26, 2025 am 02:55 AM
?? ?? :`addSlashes ()`vs.`htmlspecialchars ()`vs.`mysqli_real_escape_string ()`
SQL ?????? ???? ?? SQL ?????? ???? ?? ??? AddSlashes ()? ??????. htmlspecialchars ()? XSS ??? ???? ?? HTML ??? ?????. mysqli_real_escape_string ()? mysql ???? ??? ??? ??? ? ???, ??? ?? ??? ??? ???? ??? ?? ?????. 1. AddSlashes ()? ???? ???? ??? ???? ?? ???? SQL ??? ????? ????. 2. XSS? ???? ?? ??? ??? ???? HTML? ?? ? ? HTMLSpecialchars ()? ???????. 3. mysqli_real_escape_string (
Jul 27, 2025 am 04:27 AM
?? ??? : PHP? ???? JSON? ??? ? ?? ??? ??
PHP?? JSON ??? ? ?? ??? ???? ???? ?? ????? ???? ??? ??? ???????. 1.json_encode ()? ?? ???? ? ???? ???? ?????. ??? ???? ?? ? ???? ??? ? JSON ??? ???? ?? ?? ? ???? ?????. 2. JSON_UNESCAPED_SLASHES? ???? ???? ???? ?? URL? ? ???????. 3. 4. ??? UTF-8 ??? ? ?? ???? ?????? ( 'Content-Type : Application/JSO
Jul 28, 2025 am 04:41 AM
Backslash? ?? : PHP ?? ????? ?? ???? ??
Tomasterbackslashesinphpregex, Parpparsoccur : phpprocessesescapesequencesfirst, thenthegexenginedoes;
Jul 27, 2025 am 03:18 AMPHP ??
PHP? HEREDOC ? NOWDOC ???? ??? ??? ??????
Heredoc? \ n, \ t, \\, \ $? ?? ?? ?? ? ?? ?? ???? ????? \ "?? \ '? \"?? \'? ???? ??? nowdoc? ?? ?? ? ?? ??? ???? ????. \ n ? ??? ??? ?? ??? ?? ??? ?????. \ n Nowdoc??? ?????.
Jul 26, 2025 am 09:45 AM
PHP ?? ???? ?? ??? ????? ?????
??? ? ??? ??? ?? ??? PHP, ?? ?? ?? ?? ??? ???? ??????. ?? ??? 10 ?? ??? ?? ?? ??? ?? (IEEE754 ??)? ???? ?? ? ? ???, 0.1 0.2 ≠ 0.3? ?? ??? ????; 1. ?? ??? ?? ??? ??? ?? ==? ?? ???? ?? ?? ? (Epsilon)? ???????. 2. ?? ??? ?? ??? ??? ???? ?? ?? ?? (? : ??? ??) ?? BCMATH ??? ???????. 3. BCMATH? ???? ?? ??? ?? ??? ????, ?? ??? ????? ????? ??? ????. 4. PHP ?? ??? ??? ???? ?? ??? ?? ??? ?? ??? ??? ?? ??? ?? ? ? ????. ???, ??? ? ??? ??? ?? ???? ?? ?????
Jul 26, 2025 am 09:41 AM
?? ???? ? : ??, ??? ? ??? ?? ?? ??
integeroperationsarefastestestduetonativecpusupport, MakingeThemideAlforcounters, Indexing ? BitberOperations; 1
Jul 29, 2025 am 04:30 AM
?? PHP?? ?? ? ??? ?????
phpdoesnoveantiveBigintscalartype, buttartingwithphp8.1, experimental \ number \ bigintclassprovidearbitrary-precisionintegwortsupportwhenthebcmathextensionisenabled; 1) itoffersmethodslikeadd (), sublosfremul (), and and and and and and lepsprescetice, 2)
Jul 28, 2025 am 04:37 AM
PHP? ?? ?? ??? ? ??? ??? ?
PHP? ??? ?? ???? ?? ?? ???? ???? ?????. 1. ??? ?? (==)? ???? PHP? ??? ???? 0?? ???? 'hello'== 0? true? ???? ?? ???? ??? ? ????. ??? ?? (===)? ?? ??? ? ?? ???????. 2. ?? ???? PHP? '10apples'? ?? ???? ??? ???? 'apples10'? 0??? ?? ??? ??? ? ????. IS_NUMERIC () ?? FILTER_VAR ()? ???? ??? ???????. 3. ?? ??? '123'? ?? ?? ???? ??? ???? '007'? 7??? ??? ???? ???? ???? ?? ? ????. 4. ?? ?? ??
Jul 26, 2025 am 09:38 AM
??? ? ?????? ?? ?? ??
UseIntl.NumberFormatwithuser-specificlocalesforcorrectdigitgroupinganddecimalseparators.2.Formatcurrencyusingstyle:'currency'withISO4217codesandlocale-specificsymbolplacement.3.ApplycompactnotationforlargenumberstoenhancereadabilitywithunitslikeMor??
Jul 27, 2025 am 04:32 AM
`mt_rand`??`random_int`
mt_rand () isnotsecureforCryptographicpurspuriteseSthemersennetwisteralgorithm,?? ?? ? ??? Output, MaybepoorlySeeded, andisnotDesignedForsecurity.2.forsecurerandomnumbergeneration, userandom_int ()
Jul 28, 2025 am 04:42 AM
PHP?? ????, 8 ? ? 16 ?? ????? ??
phpsupportsbinary, octal, and hexadecimalnumbersystemsusingspecificprefixesandconversionFunctions.1.BinaryNumbersArepRefixedWith 0B (? : 0B1010 = 10 indecimal) .2.octalNumbersUse0or0o (? : 012OR0O12 = 10 indecimal) .3.HexAdeCimalNumbersUse0x (? : 0xa = 10 indeciment
Aug 01, 2025 am 07:38 AM
PHP ?? ???? : 32 ?? ? 64 ?? ???? ??? ??
integeroverflowinphpoccurswhenanintegerexeceedsplatform'smaxumvalue, canleadtoprecisionloss andunexpectedbehavior.on32 ?? ???, themaxumintegeris2,147,483,647, whideon64 bitsystems, itis9,223,372,036,85,807.whe
Jul 26, 2025 am 09:39 AM
PHP ???? ?? ???? ?? ??? ?????
BitwiseOperationsInphPareSfast, CPU-Leveloperations? handhandlingIntegers, ?? ?? ???, ?? ? compactDatastorage.2.usebitwiseOperators like &, |,^, ~, tomAnipulate individualbits, enableficients booleanflagmanagementwi
Jul 29, 2025 am 02:44 AM
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