File: wp-includes/functions.php
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function__return_true()
Returns true.
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functionis_main_site()
Determines whether a site is the main site of the current network.
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function__return_false()
Returns false.
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functionis_main_network()
Determines whether a network is the main network of the Multisite installation.
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function__return_zero()
Returns 0.
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Filters whether global terms are enabled.
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functionwp_timezone_override_offset()
Modifies gmt_offset for smart timezone handling.
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Sort-helper for timezones.
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Filters whether IIS 7+ supports pretty permalinks.
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Filters whether to trigger an error for deprecated files.
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functionvalidate_file()
Validates a file name and path against an allowed set of rules.
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function_deprecated_argument()
Marks a function argument as deprecated and inform when it has been used.
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Fires when a deprecated argument is called.
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Filters whether to trigger an error for deprecated arguments.
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function_doing_it_wrong()
Marks something as being incorrectly called.
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Fires when the given function is being used incorrectly.
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function_deprecated_function()
Marks a function as deprecated and inform when it has been used.
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Filters whether to trigger an error for _doing_it_wrong() calls.
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Fires when a deprecated function is called.
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functionis_lighttpd_before_150()
Determines whether the server is running an earlier than 1.5.0 version of lighttpd.
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Filters whether to trigger an error for deprecated functions.
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functionapache_mod_loaded()
Determines whether the specified module exist in the Apache config.
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function_deprecated_file()
Marks a file as deprecated and inform when it has been used.
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functioniis7_supports_permalinks()
Checks if IIS 7+ supports pretty permalinks.
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Fires when a deprecated file is called.
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functionwp_send_json_error()
Sends a JSON response back to an Ajax request, indicating failure.
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functionwp_maybe_load_widgets()
Determines if Widgets library should be loaded.
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function_config_wp_home()
Retrieves the WordPress home page URL.
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Filters whether to load the Widgets library.
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function_config_wp_siteurl()
Retrieves the WordPress site URL.