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Predefined Variables
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Security
Introduction
General considerations
Installed as CGI binary
Installed as an Apache module
Session Security
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HTTP authentication with PHP
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Handling file uploads
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Function Reference
Affecting PHP's Behaviour
Audio Formats Manipulation
Authentication Services
Command Line Specific Extensions
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Cryptography Extensions
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Date and Time Related Extensions
File System Related Extensions
Human Language and Character Encoding Support
Image Processing and Generation
Mail Related Extensions
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Non-Text MIME Output
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PHP Function List
fuction.is_null
doesn't exist. Closest matches:
is_null
function_exists
pg_field_is_null
reflectionenum
ocicolumnisnull
ui_controls_label
oci_field_is_null
uopz_function
yaf_config_ini
reflection
runkit7_function_rename
reflectionattribute
reflectionexception
create_function
reflectionfiber
reflectionclass
yaf_exception_loadfailed
badfunctioncallexception
ini_get_all
runkit7_function_add
ui_menu
ui_controls_spin
runkit7_function_redefine
get_defined_functions
runkit7_function_copy
set_exception_handler
yaf_exception_routerfailed
ui_controls_multilineentry
tidy_config_count
uopz_add_function
