These functions all manipulate strings in various ways. Some more specialized sections can be found in the regular expression and URL handling sections.
For information on how strings behave, especially with regard to usage of single quotes, double quotes, and escape sequences, see the Strings entry in the Types section of the manual.
Te funkcije so na voljo znotraj standardnega modula, ki je vedno na voljo.
Te funkcije ne potrebujejo namestitve, saj so del jedra PHP.
Te konstante definira ta razširitev in so tako na voljo samo kadar je razširitev prevedena skupaj s PHPjem ali kadar je dinamišno naložena med izvajanjem.
For even more powerful string handling and manipulating functions take a look at the POSIX regular expression functions and the Perl compatible regular expression functions.