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PHP Manual

Convenient PHP Manual, Written in Simple Language, with Lots of Examples.

Data Output

The echo Function

The print Function

Conditional Statements

The If Construct

The Else Construct

The elseif Construct

The Switch Construct

The Case Construct

The default Construct

The match Construct

Loops

The while Construct

The Do-While Loop

The for Construct

The Foreach Construct

The break Construct

The Continue Construct

Working with Variables

The isset Construct

The Empty Construct

The unset Construct

The Array Construct

Mathematical Functions

The abs Function

The pow Function

The sqrt Function

The max Function

The min Function

The round Function

The ceil Function

The floor Function

The fmod Function

The mt_rand Function

String Measurement

The strlen Function

The mb_strlen Function

The mb_strwidth Function

Manipulations

The trim Function

The ltrim Function

The rtrim Function

The str_pad Function

The str_repeat Function

The strrev Function

The str_shuffle Function

Case

The strtolower Function

The strtoupper Function

The mb_strtolower Function

The mb_strtoupper Function

The ucfirst Function

The lcfirst Function

The ucwords Function

Splitting

The explode Function

The str_split Function

The chunk_split Function

The parse_str Function

The strtok Function

The sscanf Function

The mb_split Function

The mb_str_split Function

The mb_strcut Function

The mb_strimwidth Function

String Parts

The substr Function

The mb_substr Function

Search and Replace

The str_replace Function

The str_ireplace Function

The strtr Function

The substr_replace Function

String Search

The str_contains Function

The str_starts_with Function

The str_ends_with Function

The strpos Function

The strrpos Function

The stripos Function

The strripos Function

The strstr Function

The strpbrk Function

The strchr Function

The strrchr Function

The mb_stripos Function

The mb_stristr Function

The mb_strpos Function

The mb_strrchr Function

The mb_strrichr Function

The mb_strripos Function

The mb_strrpos Function

The mb_strstr Function

String Counting

The substr_count Function

The mb_substr_count Function

The count_chars Function

The str_word_count Function

Tags and Escaping

The strip_tags Function

The htmlspecialchars Function

The htmlspecialchars_decode Function

The htmlentities Function

The html_entity_decode Function

The addslashes Function

The stripslashes Function

The quotemeta Function

The mb_substitute_character Function

String Formatting

The number_format Function

The money_format Function

The printf Function

The vprintf Function

The sprintf Function

The vsprintf Function

The wordwrap Function

The nl2br Function

Character Codes

The chr Function

The ord Function

String Comparison

The levenshtein Function

The similar_text Function

The soundex Function

The metaphone Function

The strncmp Function

The strncasecmp Function

The strcmp Function

The strcoll Function

The strnatcmp Function

The strnatcasecmp Function

The strcasecmp Function

Sorting

The sort Function

The rsort Function

The ksort Function

The krsort Function

The asort Function

The arsort Function

The natsort Function

The natcasesort Function

The usort Function

The uksort Function

The uasort Function

The array_multisort Function

Callbacks

The array_map Function

The array_walk Function

The array_walk_recursive Function

The array_filter Function

The array_reduce Function

Array Intersection

The array_intersect Function

The array_intersect_assoc Function

The array_intersect_key Function

The array_uintersect Function

The array_uintersect_assoc Function

The array_intersect_uassoc Function

The array_intersect_ukey Function

Array Difference

The array_diff Function

The array_diff_assoc Function

The array_udiff_assoc Function

The array_diff_key Function

The array_udiff Function

The array_diff_uassoc Function

The array_diff_ukey Function

Main Functions

The preg_match Function

The preg_match_all Function

The preg_replace Function

The preg_filter Function

Additional Functions

The preg_split Function

The preg_replace_callback Function

The preg_replace_callback_array Function

The preg_grep Function

The preg_quote Function

Error Handling

The preg_last_error Function

The preg_last_error_msg Function

Functional Style

The time Function

The mktime Function

The date Function

The strtotime Function

The microtime Function

The checkdate Function

The date_create Function

The date_modify Function

The date_add Function

The date_sub Function

The date_interval_create_from_date_string Function

The date_format Function

The date_diff Function

The date_default_timezone_set Function

The date_default_timezone_get Function

OOP Style

The DateTime Class

The DateTimeImmutable Class

The DateInterval Class

The DateTimeZone Class

The DatePeriod Class

The date_add Function

The date_sub Function

DateTime Methods

The createFromFormat Method of the DateTime Class

The DateTime::createFromImmutable Method

The format Method of the DateTime Class

The diff Method of the DateTime Class

The Modify Method of the DateTime Class

The add Method of The DateTime Class

The sub Method of the DateTime Class

The setDate Method of the DateTime Class

The setISODate Method of the DateTime Class

The setTime Method of the DateTime Class

The setTimestamp Method of the DateTime Class

The setTimezone Method of the DateTime Class

The getTimezone Method of the DateTime Class

The getOffset Method of the DateTime Class

The getTimestamp Method of the DateTime Class

The getLastErrors Method of the DateTime Class

DateInterval Methods

The createFromDateString Method of the DateInterval Class

The format Method of the DateInterval Class

Basic

The file_get_contents Function

The file_put_contents Function

The file Function

File Operations

The unlink Function

The copy Function

The rename Function

The tmpfile Function

The tempnam Function

Folder Operations

The mkdir Function

The rmdir Function

The is_dir Function

The scandir Function

The glob Function

The disk_free_space Function

The disk_total_space Function

Checks

The file_exists Function

The is_file Function

The is_readable Function

The is_writable Function

The is_executable Function

File Paths

The dirname Function

The basename Function

The realpath Function

The pathinfo Function

Information

The filesize Function

The chmod Function

The chown Function

The chgrp Function

The touch Function

The filemtime Function

The filectime Function

The fileatime Function

The finfo_file Function

The mime_content_type Function

The clearstatcache Function

File Inclusion

The include Function

The include_once Function

The require Function

The require_once Function

Low-level Files

The fopen Function

The fread Function

The fgets Function

The fgetc Function

The fwrite Function

The fclose Function

The readfile Function

The feof Function

The fseek Function

The rewind Function

The ftruncate Function

The ftell Function

The fpassthru Function

Low-level Folders

The readdir Function

The opendir Function

The closedir Function

Special Files

The fgetcsv Function

The fputcsv Function

The parse_ini_file Function

File Upload

The is_uploaded_file Function

The move_uploaded_file Function

Miscellaneous

The flock Function

The fprintf Function

The vfprintf Function

Existence Checks

The class_exists Function

The method_exists Function

The property_exists Function

The trait_exists Function

The interface_exists Function

Getting Class Information

The get_class Function

The get_parent_class Function

The get_class_methods Function

The get_class_vars Function

The get_object_vars Function

The get_called_class Function

Type and Relationship Checks

The instanceof Operator

The is_a Function

The is_subclass_of Function

The class_implements Function

The class_parents Function

The class_uses Function

Class Autoloading

The namespace Command

The spl_autoload_register Function

The spl_autoload_functions Function

The spl_autoload_unregister Function

The spl_autoload_call Function

Working with Declarations

The class_alias Function

The get_declared_classes Function

The get_declared_interfaces Function

The get_declared_traits Function

Creation

The New Operator

The class Command

The interface Keyword

The trait Keyword

Calls

The forward_static_call Function

The forward_static_call_array Function

Main Magic Methods

The __construct Method

The __destruct Method

The __clone Method

Property Access

The __get Method

The __set Magic Method

The __isset Method

The __unset Method

Call Interception

The __call Method

The __callStatic Method

The __invoke Method

Serialization

The __sleep Method

The __wakeup Method

The __serialize Method

The __unserialize Method

Object Conversion

The __toString Method

The __set_state Method

The __debugInfo Method

Exception Handling

The try Command

The catch Function

The finally Command

The throw Command

The Exception Class

The ErrorException Class

Functions

The error_reporting Function

The error_log Function

The debug_backtrace Function

The debug_print_backtrace Function

The register_shutdown_function Function

The xdebug_get_function_stack Function

The trigger_error Function

The user_error Function

The set_exception_handler Function

The set_error_handler Function

The restore_error_handler Function

The restore_exception_handler Function

Function Checking

The function_exists Function

The is_callable Function

Function Calls

The call_user_func Function

The call_user_func_array Function

Working with Arguments

The func_get_args Function

The func_num_args Function

The func_get_arg Function

Event Handling

The register_tick_function

The unregister_tick_function Function

Variables

The var_dump Function

The print_r Function

Lists

The get_defined_vars Function

The get_defined_constants Function

The get_defined_functions Function

The get_included_files Function

Memory

The memory_get_usage Function

The memory_get_peak_usage Function

The json_decode Function

The json_encode Function

The serialize Function

The unserialize Function

The var_export Function

Settings

The ini_set Function

The ini_get Function

The ini_get_all Function

The phpinfo Function

Extensions

The get_loaded_extensions Function

The extension_loaded Function

The get_extension_funcs Function

Information

The phpversion Function

The version_compare Function