Returning References Returning by reference is useful when you want to use a function to find to which variable a reference should be bound. Do not use return-by-reference to increase performance. The engine will automatically optimize this on its own. Only return references when you have a valid technical reason to do so. To return references, use this syntax: <?php class Foo { public $value = 42
htmlspecialchars( string $string, int $flags = ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, ?string $encoding = null, bool $double_encode = true ): string Certain characters have special significance in HTML, and should be represented by HTML entities if they are to preserve their meanings. This function returns a string with these conversions made. If you require all input substrings that have asso
PHP provides a large number of predefined variables to all scripts. The variables represent everything from external variables to built-in environment variables, last error messages to last retrieved headers. Table of ContentsSuperglobals — Built-in variables that are always available in all scopes$GLOBALS — References all variables available in global scope$_SERVER — Server and execution environm
http_build_query( array|object $data, string $numeric_prefix = "", ?string $arg_separator = null, int $encoding_type = PHP_QUERY_RFC1738 ): string Parameters data May be an array or object containing properties. If data is an array, it may be a simple one-dimensional structure, or an array of arrays (which in turn may contain other arrays). If data is an object, then only public properties will be
CONTENTS NAME SYNOPSIS GETTING HELP Overview Tutorials Reference Manual Internals and C Language Interface History Miscellaneous Language-Specific Platform-Specific Stubs for Deleted Documents DESCRIPTION AVAILABILITY ENVIRONMENT AUTHOR FILES SEE ALSO DIAGNOSTICS BUGS NOTES #NAME perl - The Perl 5 language interpreter #SYNOPSIS perl [ -sTtuUWX ] [ -hv ] [ -V[:configvar] ] [ -cw ] [ -d[t][:debugger
Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Su
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