PHP: echo - Manual

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This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search (current page) / Focus search box explode » « crypt PHP Manual Function Reference Text Processing Strings String Functions Change language: English Brazilian Portuguese Chinese (Simplified) French German Japanese Romanian Russian Spanish Turkish Other Edit Report a Bug echo (PHP 4, PHP 5, PHP 7) echo — Output one or more strings Description void echo ( string $arg1 [, string $... ] ) Outputs all parameters. No additional newline is appended. echo is not actually a function (it is a language construct), so you are not required to use parentheses with it. echo (unlike some other language constructs) does not behave like a function, so it cannot always be used in the context of a function. Additionally, if you want to pass more than one parameter to echo , the parameters must not be enclosed within parentheses. echo also has a shortcut syntax, where you can immediately follow the opening tag with an equals sign. Prior to PHP 5.4.0, this short syntax only works with the short_open_tag configuration setting enabled. I have foo. The major differences to print are that echo accepts an argument list and doesn't have a return value. Parameters arg1 The parameter to output. ... Return Values No value is returned. Examples Example #1 echo examples "foo" ); echo "this is { $baz [ 'value' ]} !" ; // this is foo ! // Using single quotes will print the variable name, not the value echo 'foo is $foo' ; // foo is $foo // If you are not using any other characters, you can just echo variables echo $foo ; // foobar echo $foo , $bar ; // foobarbarbaz // Strings can either be passed individually as multiple arguments or // concatenated together and passed as a single argument echo 'This ' , 'string ' , 'was ' , 'made ' , 'with multiple parameters.' , chr ( 10 ); echo 'This ' . 'string ' . 'was ' . 'made ' . 'with concatenation.' . "\n" ; echo << Notes Note : Because this is a language construct and not a function, it cannot be called using variable functions . Tip A benefit to passing in multiple arguments over using concatenation in echo regards the precedence of the period operator in PHP. If multiple arguments are passed in, then parentheses will not be required to enforce precedence: Could even be worth getting into the habit of enclosing all variables in {} when writing echo strings, to be on the safe side. up down 1 pemapmodder1970 at gmail dot com ¶ 18 days ago Passing multiple parameters to echo using commas (',')is not exactly identical to using the concatenation operator ('.'). There are two notable differences. First, concatenation operators have much higher precedence. Referring to http://php.net/operators.precedence, there are many operators with lower precedence than concatenation, so it is a good idea to use the multi-argument form instead of passing concatenated strings. Second, a slightly confusing phenomenon is that unlike passing arguments to functions, the values are evaluated one by one. The output would be: string(3) "bar"FoobarFoo Foostring(3) "bar" barFoo It would become a confusing bug for a script that uses blocking functions like sleep() as parameters: vs With ',' the cursor stops at the beginning every newline, while with '.' the cursor stops after the 0 in the beginning every line (because sleep() returns 0). up down -1 214363570 at qq dot com ¶ 22 days ago Dear: Is there a offical function like echoln(), such as function echoln($s=""){ echo $s."\n"; } $str = "i love php"; echoln($str); echoln($str); echoln($str); echoln($str); not is: echo $str."\n"; echo $str."\n"; echo $str."\n"; echo $str."\n"; echo $str."\n"; Thank you. Best regards. add a note String Functions addcslashes addslashes bin2hex chop chr chunk_​split convert_​cyr_​string convert_​uudecode convert_​uuencode count_​chars crc32 crypt echo explode fprintf get_​html_​translation_​table hebrev hebrevc hex2bin html_​entity_​decode htmlentities htmlspecialchars_​decode htmlspecialchars implode join lcfirst levenshtein localeconv ltrim md5_​file md5 metaphone money_​format nl_​langinfo nl2br number_​format ord parse_​str print printf quoted_​printable_​decode quoted_​printable_​encode quotemeta rtrim setlocale sha1_​file sha1 similar_​text soundex sprintf sscanf str_​getcsv str_​ireplace str_​pad str_​repeat str_​replace str_​rot13 str_​shuffle str_​split str_​word_​count strcasecmp strchr strcmp strcoll strcspn strip_​tags stripcslashes stripos stripslashes stristr strlen strnatcasecmp strnatcmp strncasecmp strncmp strpbrk strpos strrchr strrev strripos strrpos strspn strstr strtok strtolower strtoupper strtr substr_​compare substr_​count substr_​replace substr trim ucfirst ucwords vfprintf vprintf vsprintf wordwrap Copyright © 2001-2017 The PHP Group My PHP.net Contact Other PHP.net sites Mirror sites Privacy policy