PHP编译过程中常见错误信息的解决方
checking for BZip2 support… yes checking for BZip2 in default path… not found configure: error: Please reinstall the BZip2 distribution
Fix: yum install bzip2-devel
checking for cURL support… yes checking if we should use cURL for url streams… no checking for cURL in default path… not found configure: error: Please reinstall the libcurl distribution ? easy.h should be in/include/curl/
Fix: yum install curl-devel
checking for curl_multi_strerror in -lcurl… yes checking for QDBM support… no checking for GDBM support… no checking for NDBM support… no configure: error: DBA: Could not find necessary header file(s).
Fix: yum install db4-devel
checking for fabsf… yes checking for floorf… yes configure: error: jpeglib.h not found.
Fix: yum install libjpeg-devel
checking for fabsf… yes checking for floorf… yes checking for jpeg_read_header in -ljpeg… yes configure: error: png.h not found.
Fix: yum install libpng-devel
checking for png_write_image in -lpng… yes If configure fails try ?with-xpm-dir=
configure: error: freetype.h not found.Fix: Reconfigure your PHP with the following option. --with-xpm-dir=/usr
checking for png_write_image in -lpng… yes configure: error: libXpm.(a|so) not found.
Fix: yum install libXpm-devel
checking for bind_textdomain_codeset in -lc… yes checking for GNU MP support… yes configure: error: Unable to locate gmp.h
Fix: yum install gmp-devel
checking for utf8_mime2text signature… new checking for U8T_DECOMPOSE… configure: error: utf8_mime2text() has new signature, but U8T_CANONICAL is missing. This should not happen. Check config.log for additional information.
Fix: yum install libc-client-devel
checking for LDAP support… yes, shared checking for LDAP Cyrus SASL support… yes configure: error: Cannot find ldap.h
Fix: yum install openldap-devel
checking for mysql_set_character_set in -lmysqlclient… yes checking for mysql_stmt_next_result in -lmysqlclient… no checking for Oracle Database OCI8 support… no checking for unixODBC support… configure: error: ODBC header file ‘/usr/include/sqlext.h’ not found!
Fix:
yum install unixODBC-devel
checking for PostgreSQL support for PDO… yes, shared checking for pg_config… not found configure: error: Cannot find libpq-fe.h. Please specify correct PostgreSQL installation path
Fix: yum install postgresql-devel
checking for sqlite 3 support for PDO… yes, shared checking for PDO includes… (cached) /usr/local/src/php-5.3.7/ext checking for sqlite3 files in default path… not found configure: error: Please reinstall the sqlite3 distribution
Fix: yum install sqlite-devel
checking for utsname.domainname… yes checking for PSPELL support… yes configure: error: Cannot find pspell
Fix: yum install aspell-devel
checking whether to enable UCD SNMP hack… yes checking for default_store.h… no
checking for kstat_read in -lkstat… no checking for snmp_parse_oid in -lsnmp… no checking for init_snmp in -lsnmp… no configure: error: SNMP sanity check failed. Please check config.log for more information.
Fix: yum install net-snmp-devel
checking whether to enable XMLWriter support… yes, shared checking for xml2-config path… (cached) /usr/bin/xml2-config checking whether libxml build works… (cached) yes checking for XSL support… yes, shared configure: error: xslt-config not found. Please reinstall the libxslt >= 1.1.0 distribution
Fix: yum install libxslt-devel
configure: error: xml2-config not found. Please check your libxml2 installation.
Fix: yum install libxml2-devel
checking for PCRE headers location… configure: error: Could not find pcre.h in /usr
Fix: yum install pcre-devel
configure: error: Cannot find MySQL header files under yes. Note that the MySQL client library is not bundled anymore!
Fix: yum install mysql-devel
checking for unixODBC support… configure: error: ODBC header file ‘/usr/include/sqlext.h’ not found!
Fix: yum install unixODBC-devel
checking for pg_config… not found configure: error: Cannot find libpq-fe.h. Please specify correct PostgreSQL installation path
Fix:
yum install postgresql-devel
configure: error: Cannot find pspell
Fix: yum install pspell-devel
configure: error: Could not find net-snmp-config binary. Please check your net-snmp installation.
Fix: yum install net-snmp-devel
configure: error: xslt-config not found. Please reinstall the libxslt >= 1.1.0 distribution

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl


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