PHP functions (4)

Chapter 2 XML parsing functions 25th
25.1 Syntax Parsing functions in PHP 453
25.1.1 utf8_decode function: converts a UTF-8 string encoded in ISO-8859-1 to a single-byte ISO-8859-1 string 453
25.1.2 utf8_encode function: converts a ISO-8859-1-encoded string to a UTF-8-encoded 454
25.1.3 xml_error_string function: gets the error string 454 of the XML Parser
25.1.4 xml_get_current_byte_index function: Get the Current byte index of the XML Parser 455
25.1.5 xml_get_current_column_number function: gets the current column number 455 of the XML parser.
25.1.6 xml_get_current_line_number function: Get the current row number of the XML Parser 456
25.1.7 xml_get_error_code function: Error in retrieving XML Parser Code 456
25.1.8 xml_parse_into_struct function: parses XML data to the array. 457
25.1.9 xml_parse function: Start parsing an XML document 458
25.1.10 xml_parser_create_ns function: generate an XML Parser 458 that supports namespaces
25.1.11 xml_parser_create function: Create an XML Parser 459
25.1.12 xml_parser_free function: Release the specified XML Parser 459
25.1.13 xml_parser_get_option function: Get the option setting information 460 from the XML Parser
25.1.14 xml_parser_set_option function: Set the 460 option for the specified XML Parser
25.1.15 xml_set_character_data_handler function: create a character data processor 461
25.1.16 xml_set_default_handler function: Creates the default processor 461
25.1.17 xml_set_element_handler function: Creates the starting and ending element processor 462.
25.1.18 xml_set_end_namespace_decl_handler function: creates an end namespace claim processor 464.
25.1.19 xml_set_external_entity_ref_handler function: creates an external entity pointing to processor 464
25.1.20 xml_set_notation_decl_handler function: creates an annotation declaration processor 465
25.1.21 xml_set_object function: Use the XML Parser 466 in the object
25.1.22 xml_set_processing_instruction_handler function: Create a processing instruction processor 467
25.1.23 xml_set_start_namespace_decl_handler function: Create the starting namespace declaration processor 468
25.1.24 xml_set_unparsed_entity_decl_handler function: Creates the unresolved entity definition declaration processor 468
25.2 conclusion 469
Chapter 2 XMLRPC functions 26th
26.1 XMLRPC function 470 in PHP
26.1.1 xmlrpc_decode_request function: decodes XML into 470 of PHP type
26.1.2 xmlrpc_decode function: decodes XML into 471 of the PHP type.
26.1.3 xmlrpc_encode_request function: generate xml 471 for PHP values
26.1.4 xmlrpc_encode function: generate xml 472 for PHP values
26.1.5 xmlrpc_get_type function: Type 472 for retrieving XMLRPC for PHP values
26.1.6 xmlrpc_is_fault function: Check whether XMLRPC has an error 473
26.1.7 xmlrpc_parse_method_descriptions function: decodes XML into the list of method descriptions 474
26.1.8 xmlrpc_server_add_introspection_data function: 474
26.1.9 xmlrpc_server_call_method function: parses XML requests and calls method 475 at the same time.
26.1.10 xmlrpc_server_create function: Create an XMLRPC server 475
26.1.11 xmlrpc_server_destroy function: Destroy server resource 476
26.1.12 xmlrpc_server_register_introspection_callback function: register a PHP function to generate document 476
26.1.13 xmlrpc_server_register_method function: registers a PHP function to match the XMLRPC method name 477.
26.1.14 xmlrpc_set_type function: sets the XMLRPC type 478 for a PHP string value.
26.2 Conclusion 479
9th Comprehensive Functions
Chapter 2 errors and logging functions 27th
27.1 errors and logging functions in PHP 483
27.1.1 debug_backtrace function: generate a backtrace 483
27.1.2 debug_print_backtrace function: outputs a PHP backtrace 484
27.1.3 error_log function: sends an error message to the specified location 484
27.1.4 error_reporting function: Set PHP error report level 485
27.1.5 restore_error_handler function: Restore error message pointer 486
27.1.6 restore_exception_handler function: restores the pre-defined exception pointer 487.
27.1.7 set_error_handler function: sets a user-defined error message function 487.
27.1.8 set_exception_handler function: Set a user-defined exception handle function 489
27.1.9 trigger_error function: generate a user-level error, warning, or note 489
27.2 conclusion 490
Chapter 2 math functions 28th
28.1 mathematical computing functions 491
28.1.1 ABS function: returns the absolute value of 491.
28.1.2 Ceil function: returns an integer of 492.
28.1.3 floor function: rounds 492
28.1.4 fmod function: returns the remainder of the Floating Point Number of the Division 492.
28.1.5 log10 function: returns the base-10 logarithm of 493.
28.1.6 log1p function: Return log (1 + number) 494
28.1.7 log function: returns the (natural) logarithm of the specified value 494.
28.1.8 POW function: returns the nth power 495 of the specified value.
28.1.9 round: round the floating point number to 495
28.1.10 SQRT function: returns the square root of the specified value 496
28.2 mathematical trigonometric functions 496
28.2.1 ACOs function: returns the arc cosine of 497.
28.2.2 acossh function: returns the hyperbolic cosine of 497.
28.2.3 asin function: returns the arc sine of 497.
28.2.4 asinh function: returns the hyperbolic sine of 498.
28.2.5 atan2 function: Calculate the arc tangent of two parameters by 498
28.2.6 atan function: returns the tangent of 499.
28.2.7 atanh function: returns the hyperbolic tangent of 499.
28.2.8 cos function: returns the cosine 499.
28.2.9 cosh function: returns the hyperbolic cosine of 500.
28.2.10 sin function: returns the sine 500.
28.2.11 Sinh function: returns the hyperbolic sine 501.
28.2.12 tan function: returns the tangent of 501
28.2.13 tanh function: returns the hyperbolic tangent of 501.
28.3 evaluate the maximum function 502
28.3.1 getrandmax function: displays the maximum possible value of a random number of 502
28.3.2 Max function: Find the maximum value of 502
28.3.3 min function: Find the minimum value of 503
28.3.4 mt_getrandmax function: display the maximum possible value of a random number of 504
28.4 hexadecimal conversion function 504
28.4.1 base_convert function: Convert the number 505 from any hexadecimal notation
28.4.2 bindec function: Convert binary to decimal 505
28.4.3 decbin function: Convert decimal to binary 506
28.4.4 dechex function: converts decimal to hexadecimal 506
28.4.5 decoct function: Convert decimal to octal 507
28.4.6 hexdec function: Convert hexadecimal to decimal 507
28.4.7 dec function: Convert octal to decimal 507
28.5 other mathematical functions 508
28.5.1 deg 2rad function: converts degrees to radians 508
28.5.2 exp function: Calculate the e index 508
28.5.3 expm1 function: returns exp (number)-1 509
28.5.4 hypot function: Calculate the oblique side length of a right triangle by 509
28.5.5 is_finite function: determines if it is a finite value of 510
28.5.6 is_infinite function: determines if it is an infinite value of 510
28.5.7 is_nan function: judge whether it is a valid value of 511
28.5.8 lcg_value function: Combined linear coequal generator 511
28.5.9 mt_rand function: generate a better Random Number of 512
28.5.10 mt_srand function: play a better random number generator seed 512
28.5.11 PI function: Get the circumference rate value 513
28.5.12 rad2deg function: converts the number of radians to the corresponding number of degrees 513
28.5.13 rand function: generates a random integer of 514.
28.5.14 srand function: broadcast the random number generator seed 514.
28.6 conclusion 515
Chapter 2 output control functions 29th
29.1 PHP Output Control Function 516
29.1.1 flush function: refresh the output buffer 516
29.1.2 ob_clean function: clears the output buffer 517
29.1.3 ob_end_clean function: clears the buffer and closes the ongoing output buffer 518
29.1.4 ob_end_flush function: sends buffer data and disables buffer 518.
29.1.5 ob_flush function: Send buffer data 519
29.1.6 ob_get_clean function: gets the buffer content and ends the buffer 519
29.1.7 ob_get_contents function: Get the buffer data 520
29.1.8 ob_get_flush function: refreshes the buffer data, returns the data, and disables the buffer 520.
29.1.9 ob_get_length function: Get the buffer length of 521
29.1.10 ob_get_level function: Get the buffer level 522
29.1.11 ob_get_status function: Get the buffer status 522
29.1.12 ob_gzhandler function: the callback function used by ob_start to compress the output buffer 523.
29.1.13 ob_implicit_flush function: enable or disable the original output buffer 524
29.1.14 ob_list_handlers function: list all output handles used 525
29.1.15 ob_start function: Open buffer 525
29.1.16 output_add_rewrite_var function: Add a URL rewrite value of 526.
29.1.17 output_reset_rewrite_vars function: resets the URL rewrite value by 526.
29.2 conclusion 527
Chapter 2 PHP options/INFO functions 30th
30.1 PHP Information Retrieval Class Functions 528
30.1.1 assert function: Check whether the assertion declaration is incorrect. 528
30.1.2 extension_loaded function: Check whether PHP extensions load 529
30.1.3 get_cfg_var function: gets the value of the PHP configuration option 529
30.1.4 get_current_user function: get the name of the owner of the current PHP script 530
30.1.5 get_defined_constants function: returns an array of 531 containing PHP predefined constants.
30.1.6 get_extension_funcs function: returns an array of 532 containing the names of all functions in the specified Module
30.1.7 get_include_path function: returns the information of the path contained in the current configuration file 534
30.1.8 get_included_files function: returns an array 534 about file inclusion information.
30.1.9 get_loaded_extensions function: returns an array of 535 containing information about all load modules.
30.1.10 get_magic_quotes_gpc function: Get magic_quotes_gpc status information 536
30.1.11 get_magic_quotes_runtime function: gets the status information of magic_quotes _ runtime 537
30.1.12 get_required_files function: returns an array 537 about file inclusion information
30.1.13 getenv function: Get the PHP environment variable value 538
30.1.14 getlastmod function: Get the last modification time of the current PHP page file: 539
30.1.15 getmygid function: Get the GID Number of the current PHP script page owner 539
30.1.16 getmyinode function: Get the inode number 540 on the current PHP script page
30.1.17 getmypid function: Get php pid 541
30.1.18 getmyuid function: Get the UID Number of the PHP script page owner 541
30.1.19 getopt function: Get setting 542 from the command line parameter list
30.1.20 getrusage function: Get the current resource syntax 542
30.1.21 ini_get_all function: Get all configuration options 543
30.1.22 ini_get function: gets the value of the configuration option 544
30.1.23 memory_get_usage function: returns 544 of the memory occupied by the PHP script.
30.1.24 php_ini_scanned_files function: returns the configuration file list 545 in the configuration file directory.
30.1.25 php_logo_guid function: Get the guid 546 of the logo image.
30.1.26 php_sapi_name function: gets the interface type 546 between PHP and Web Server
30.1.27 php_uname function: Obtain the operating system information of the PHP script running 547
30.1.28 phpcredits function: print the credits list 548
30.1.29 phpinfo function: Output PHP information 549
30.1.30 phpversion function: Get PHP 550
30.1.31 zend_logo_guid function: gets the guid 550 of the Zend logo image.
30.1.32 zend_version function: Get Zend engine version 551
30.2 PHP configuration class functions 551
30.2.1 assert_options function: set or obtain different declaration mark 551
30.2.2 ini_alter function: set the value of the PHP configuration option to 552.
30.2.3 ini_restore function: the value of the restore configuration option is 564.
30.2.4 ini_set function: set the value of the PHP configuration option to 565.
30.2.5 putenv function: Set the environment variable 565
30.2.6 restore_include_path function: recovery file contains path configuration information 566
30.2.7 set_include_path function: Set file inclusion path configuration option 566
30.2.8 set_magic_quotes_runtime function: Set magic_quotes runtime to 567
30.2.9 set_time_limit function: sets the maximum execution time to 567.
30.3 other functions 568
30.3.1 DL function: Load PHP extension module 568
30.3.2 main function: it is only a named main () function 568.
30.3.3 version_compare function: compare two PHP versions with a value of 569
30.4 conclusion 570
Chapter 2 program execution function 31st
In PHP 31.1 Program Execute function 571
31.1.1 escapeshellarg function: filter the string 571 used as the command parameter.
31.1.2 escapeshellcmd function: filter special characters 571 in strings used as commands
31.1.3 exec function: Execute Command 572
31.1.4 passthru function: executes the program but does not output 573 data
31.1.5 proc_close function: closes a process opened by the proc_open () function and returns the exit of the process.
Code 574:
31.1.6 proc_get_status function: Get Process status information 574
31.1.7 proc_nice function: change the priority of the current process by 575
31.1.8 proc_open function: Execute the command and open the input/output file pointer 576
31.1.9 proc_terminate function: Kill process 577
31.1.10 shell_exec function: Execute the command and return the complete output result as a string 578
31.1.11 system function: Execute the program and output result 578.
31.2 conclusion 579
Chapter 2 date/time functions 32nd
32.1 Date and Time Functions in PHP 580
32.1.1 checkdate function: Verify a greaguri date 580
32.1.2 date_default_timezone_get function: obtains the Default Time Zone 581 used by all date and time functions in a script.
32.1.3 date_default_timezone_set function: sets the Default Time Zone 582 for all date and time functions in a script
32.1.4 date_sunrise function: returns the sunrise time of the given date and place at 582.
32.1.5 date_sunset function: returns the Sunset Time 583 of the given date and location.
32.1.6 date function: format a local time/date 583
32.1.7 getdate function: Get date/time information 586
32.1.8 gettimeofday function: Get the current time 587
32.1.9 gmdate function: format a gmt/UTC date/time 588
32.1.10 gmmktime function: obtains the Unix timestamp 588 of the GMT date.
32.1.11 gmstrftime function: Format GMT/UTC time/date 589 according to region settings
32.1.12 idate function: format the local time and date as an integer of 589
32.1.13 localtime function: Get local time 590
32.1.14 microtime function: returns the current UNIX Timestamp and 591 microseconds.
32.1.15 mktime function: obtains the Unix timestamp 592 of a date.
32.1.16 strftime function: Format local time/date 593 according to region settings
32.1.17 strptime function: parses the date/time 595 generated by strftime
32.1.18 strtotime function: parses the date and time descriptions of any English text into UNIX timestamp 595
32.1.19 time function: returns the current UNIX timestamp 596
32.2 conclusion 597
Chapter 2 classes/objects functions 33rd
33.1 PHP class/object function 598
33.1.1 class_exists function: Check whether the class has been defined as 598
33.1.2 get_class_methods function: returns the array 599 consisting of class method names.
33.1.3 get_class_vars function: returns the array 600 consisting of the default attributes of the class.
33.1.4 get_class function: Class Name 601 of the returned object
33.1.5 get_declared_classes function: returns the array 602 consisting of the names of the defined classes.
33.1.6 get_declared_interfaces function: returns the array 604 of a declared interface.
33.1.7 get_object_vars function: returns the associated array 604 composed of object attributes.
33.1.8 get_parent_class function: returns the parent class name 605 of the object or class.
33.1.9 interface_exists function: Check whether the interface defines 606
33.1.10 is_a function: judge whether an object belongs to a class 607
33.1.11 is_subclass_of function: judge whether the object belongs to a subclass of A Class 607
33.1.12 method_exists function: Check whether the class methods exist 608
33.1.13 property_exists function: Check whether the object or class has the specified attribute 609
33.2 conclusion 610
Chapter 2 COM functions 34th
34.1 COM and. NET functions in PHP 611
34.1.1 com function: COM class constructor, which provides the framework 611 for integrating (d) COM components into PHP scripts
34.1.2 DOTNET function: Creates a class from the. NET set and calls the class method. The class attribute 612 is used.
34.1.3 variant function: encapsulate variables into a simple container 613 In the Variant Structure
34.1.4 com_create_guid function: generates a globally unique identifier (guid) 613
34.1.5 com_event_sink function: establish a connection between the COM object and the PHP Object 614
34.1.6 com_get_active_object function: returns the handle 615 of a running com class instance.
34.1.7 com_invoke function: Method 615 for calling COM components
34.1.8 com_isenum function: Get An ienumvariant 616
34.1.9 com_load_typelib function: load a typelib 616
34.1.10 com_load function: create reference 617 for the new COM Component
34.1.11 com_message_pump function: stops running at the specified time, waiting for information to arrive at 617
34.1.12 com_print_typeinfo function: outputs a PHP class 617 defined as a process interface.
34.2 conclusion 618
Chapter 2 miscellaneous functions 35th
35.1 miscellaneous functions in PHP 619
35.1.1 connection_aborted function: Judge the client connection status 619
35.1.2 connection_status function: returns the client connection status 620.
35.1.3 connection_timeout function: Judge the script running status 620
35.1.4 constant function: returns the constant value 620
35.1.5 define function: defines a constant value of 621
35.1.6 defined function: judge whether a constant exists 621
35.1.7 die function: Exit program 622
35.1.8 eval function: Use a string as the PHP code to execute 622
35.1.9 exit function: exit and output information 623
35.1.10 get_browser function: Obtain the functions of the client browser 624
35.1.11 highlight_file function: displays a file with a brightness of 625
35.1.12 highlight_string function: High Brightness 626 for a string
35.1.13 ignore_user_abort function: sets whether to end PHP code 626 when the client is disconnected.
35.1.14 pack function: pack the specified data as a binary string 627
35.1.15 php_check_syntax function: Check the PHP File Syntax 628
35.1.16 php_strip_whitespace function: Remove comments and spaces in the PHP file 628
35.1.17 show_source function: displays a file with a brightness of 629
35.1.18 sleep function: Pause program 629
35.1.19 time_nanosleep function: Pause program 630
35.1.20 time_sleep_until function: Wake up program 631 at the specified time
35.1.21 uniqid function: generate a single ID 631
35.1.22 unpack function: unpack data from binary string to array 631
35.1.23 usleep function: Pause the program in microseconds 632

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