INDEX multidimensional arrays, 48, 56 nowdoc syntax, 54 NULL data type, 48 object data type, 48 online documentation for PHP syntax, 47 performing calculations, 49 PHP as a weakly typed language, 48 PHP quick checklist of main language points, 67 precedence of arithmetic operators, table of, 50 print_r(), using to inspect the contents of an array, 57 resource data type, 48 return keyword, 66 side-effects of PHP s weak typing, 48 single and double quotes, 52 string data type, 48 switch statement, 60 ternary operator, 61 variables inside strings, 52 while loop, 62 See also overview of PHP referential integrity maintaining,. | INDEX multidimensional arrays 48 56 nowdoc syntax 54 NULL data type 48 object data type 48 online documentation for PHP syntax 47 performing calculations 49 PHP as a weakly typed language 48 PHP quick checklist of main language points 67 precedence of arithmetic operators table of 50 print_r using to inspect the contents of an array 57 resource data type 48 return keyword 66 side-effects of PHP s weak typing 48 single and double quotes 52 string data type 48 switch statement 60 ternary operator 61 variables inside strings 52 while loop 62 See also overview of PHP referential integrity maintaining 417 431 preserving on record deletion 452 Regexiterator class 198 202 259 261 264-265 268 register_01 .php 259 262 264-265 267 269 469 470 461 465 register_globals leaving turned off 108 462 462 265-267 269 .php 267 269 461 461 regular expressions regex 119 Relation view 455 Reply-To header 122 _REQUEST 108 require 71 require_once 71 required array 115 134 required attribute 105 resources 48 return keyword 66 rewind 188 193 root superuser account 288 rowCount 309-310 322 362 375 456 465 rss tag 204 RSS feed RSS Specification online location 205 structure of 204 rtrim 187 S safe_mode_include_dir 181 Save as file check box 298 scandir 168 195 scope 66 scope resolution double colon operator 404 255-257 255 Secure Sockets Layer SSL 469 using for secure data transmission 107 security checking user input before processing it 6 using insecure email scripts 6 SEEK_END 193 SELECT command 315 355 419 DISTINCT option 377 linking tables in a SELECT query 422 syntax of 369 377 WHERE clause 377 select tag 138 selected attribute 138 self-processing
