ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

Π£Π΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

(PHP 4, PHP 5, PHP 7, PHP 8)

trim β€” УдаляСт ΠΏΡ€ΠΎΠ±Π΅Π»Ρ‹ (ΠΈΠ»ΠΈ Π΄Ρ€ΡƒΠ³ΠΈΠ΅ символы) ΠΈΠ· Π½Π°Ρ‡Π°Π»Π° ΠΈ ΠΊΠΎΠ½Ρ†Π° строки

ОписаниС

Бписок ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ²

ΠžΠ±Ρ€Π΅Π·Π°Π΅ΠΌΠ°Ρ строка ( string ).

Π’ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅ΠΌΡ‹Π΅ значСния

ΠŸΡ€ΠΈΠΌΠ΅Ρ€Ρ‹

ΠŸΡ€ΠΈΠΌΠ΅Ρ€ #1 ΠŸΡ€ΠΈΠΌΠ΅Ρ€ использования trim()

Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π°:

ΠŸΡ€ΠΈΠΌΠ΅Ρ€ #2 ΠžΠ±Ρ€Π΅Π·Π°Π½ΠΈΠ΅ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠΉ массива с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ trim()

Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π°:

ΠŸΡ€ΠΈΠΌΠ΅Ρ‡Π°Π½ΠΈΡ

Π—Π°ΠΌΠ΅Ρ‡Π°Π½ΠΈΠ΅: Π’ΠΎΠ·ΠΌΠΎΠΆΠ½Ρ‹Π΅ Ρ‚Ρ€ΡŽΠΊΠΈ: ΡƒΠ΄Π°Π»Π΅Π½ΠΈΠ΅ символов ΠΈΠ· сСрСдины строки

Π‘ΠΌΠΎΡ‚Ρ€ΠΈΡ‚Π΅ Ρ‚Π°ΠΊΠΆΠ΅

User Contributed Notes 18 notes

When specifying the character mask,
make sure that you use double quotes

= »
Hello World » ; //here is a string with some trailing and leading whitespace

Non-breaking spaces can be troublesome with trim:

// PS: Thanks to John for saving my sanity!
?>

It is worth mentioning that trim, ltrim and rtrim are NOT multi-byte safe, meaning that trying to remove an utf-8 encoded non-breaking space for instance will result in the destruction of utf-8 characters than contain parts of the utf-8 encoded non-breaking space, for instance:

non breaking-space is «\u» or «\xc2\xa0» in utf-8, «Β΅» is «\u» or «\xc2\xb5» in utf-8 and «Γ » is «\u» or «\xc3\xa0» in utf-8

$input = «\uΒ΅ dΓ©jΓ \u«; // » Β΅ dΓ©jΓ  «
$output = trim($input, «\u«); // «β–’ dΓ©jβ–’» or whatever how the interpretation of broken utf-8 characters is performed

$output got both «\u» characters removed but also both «Β΅» and «Γ » characters destroyed

Care should be taken if the string to be trimmed contains intended characters from the definition list.

E.g. if you want to trim just starting and ending quote characters, trim will also remove a trailing quote that was intentionally contained in the string, if at position 0 or at the end, and if the string was defined in double quotes, then trim will only remove the quote character itself, but not the backslash that was used for it’s definition. Yields interesting output and may be puzzling to debug.

To remove multiple occurences of whitespace characters in a string an convert them all into single spaces, use this:

trim is the fastest way to remove first and last char.

This is the best solution I’ve found that strips all types of whitespace and it multibyte safe

Trim full width space will return mess character, when target string starts with ‘γ€Š’

[EDIT by cmb AT php DOT net: it is not necessarily safe to use trim with multibyte character encodings. The given example is equivalent to echo trim(«\xe3\80\8a», «\xe3\x80\x80»).]

if you are using trim and you still can’t remove the whitespace then check if your closing tag inside the html document is NOT at the next line.

there should be no spaces at the beginning and end of your echo statement, else trim will not work as expected.

If you want to check whether something ONLY has whitespaces, use the following:

Π˜ΡΡ‚ΠΎΡ‡Π½ΠΈΠΊ

Как с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ PHP ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ – всС способы Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ

Π”Π°Ρ‚Π° ΠΏΡƒΠ±Π»ΠΈΠΊΠ°Ρ†ΠΈΠΈ: 2017-05-19

ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ Ρ„ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ ΠΊΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΡƒ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. ΠšΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΠ° ΠΏΡ€ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π€ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

ΠžΡ‚ Π°Π²Ρ‚ΠΎΡ€Π°: ΠΌΠΎΠΆΠ΅Ρ‚, слов Π½Π΅ Π²Ρ‹ΠΊΠΈΠ½Π΅ΡˆΡŒ ΠΈΠ· пСсни. Но Π²ΠΎΡ‚ Π² PHP ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ ΠΏΡ€ΠΎΡ‰Π΅ простого. БСгодня этим ΠΈ займСмся.

Π€ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½Ρ‹ΠΉ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄

Π˜ΠΌΠ΅Π΅Ρ‚ΡΡ Π² Π²ΠΈΠ΄Ρƒ использованиС встроСнных Π² ядро языка Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΉ. Π‘Π½Π°Ρ‡Π°Π»Π° ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌ str_replace(). Она ΠΏΡ€ΠΈΠ½ΠΈΠΌΠ°Π΅Ρ‚ Ρ‚Ρ€ΠΈ Π°Ρ€Π³ΡƒΠΌΠ΅Π½Ρ‚Π°: символ Π·Π°ΠΌΠ΅Π½Ρ‹, замСняСмый символ ΠΈ ΠΈΡΡ…ΠΎΠ΄Π½ΡƒΡŽ строку. ΠŸΡ€ΠΈΠΌΠ΅Ρ€:

ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ Ρ„ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ ΠΊΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΡƒ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. ΠšΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΠ° ΠΏΡ€ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π€ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ Ρ„ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ ΠΊΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΡƒ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. ΠšΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΠ° ΠΏΡ€ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π€ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

БСсплатный курс ΠΏΠΎ PHP ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡŽ

ΠžΡΠ²ΠΎΠΉΡ‚Π΅ курс ΠΈ ΡƒΠ·Π½Π°ΠΉΡ‚Π΅, ΠΊΠ°ΠΊ ΡΠΎΠ·Π΄Π°Ρ‚ΡŒ Π΄ΠΈΠ½Π°ΠΌΠΈΡ‡Π½Ρ‹ΠΉ сайт Π½Π° PHP ΠΈ MySQL с ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ нуля, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡ модСль MVC

Π’ курсС 39 ΡƒΡ€ΠΎΠΊΠΎΠ² | 15 часов Π²ΠΈΠ΄Π΅ΠΎ | исходники для ΠΊΠ°ΠΆΠ΄ΠΎΠ³ΠΎ ΡƒΡ€ΠΎΠΊΠ°

Но это Π½Π΅ СдинствСнная функция для ΠΈΠ·ΡŠΡΡ‚ΠΈΡ Β«Π½Π΅ΠΆΠ΅Π»Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎΒ» элСмСнта ΠΈΠ· строки. Π’ΠΎΡ‚ Π΅Ρ‰Π΅ ΠΎΠ΄Π½Π°:

ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ Ρ„ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ ΠΊΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΡƒ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. ΠšΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΠ° ΠΏΡ€ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π€ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

Π—Π΄Π΅ΡΡŒ для удалСния ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π½Ρ‹Ρ… частСй тСкста примСняСм Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡŽ substr(). Π’ качСствС ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² ΠΏΠ΅Ρ€Π΅Π΄Π°Π΅ΠΌ Π΅ΠΉ ΠΏΠ΅Ρ€Π²ΠΎΠ½Π°Ρ‡Π°Π»ΡŒΠ½ΡƒΡŽ строку, ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅, с ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ³ΠΎ Π½ΡƒΠΆΠ½ΠΎ ΠΎΡ‚ΡΠ΅Ρ‡ΡŒ строку, ΠΈ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ послСднСго Π·Π½Π°ΠΊΠ° Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅ΠΌΠΎΠΉ подстроки.

ИспользованиС Π΄Π°Π½Π½ΠΎΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ ΠΎΠΏΡ€Π°Π²Π΄Π°Π½ΠΎ, Ссли Π·Π½Π°Π΅Ρ‚Π΅ ΠΎΡ‡Π΅Ρ€Π΅Π΄Π½ΠΎΡΡ‚ΡŒ символа, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ Π½ΡƒΠΆΠ½ΠΎ ΠΈΠ·ΡŠΡΡ‚ΡŒ.

Π’ΠΎΡ‚ Π΅Ρ‰Π΅ ΠΎΠ΄Π½Π° функция, ΠΏΠΎΠΌΠΎΠ³Π°ΡŽΡ‰Π°Ρ Π² Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΈ ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡ‹. strstr() Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅Ρ‚ Ρ‡Π°ΡΡ‚ΡŒ строки Π΄ΠΎ ΠΈΠ»ΠΈ послС ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π½ΠΎΠ³ΠΎ Π΅ΠΉ символа. Как ΠΎΡ‚ Π½Π΅Π³ΠΎ ΠΈΠ·Π±Π°Π²ΠΈΡ‚ΡŒΡΡ:

ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ Ρ„ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ ΠΊΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΡƒ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. ΠšΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΠ° ΠΏΡ€ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π€ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

Для этого Π² ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π°Ρ… Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ ΡƒΠΊΠ°Π·Ρ‹Π²Π°Π΅ΠΌ true ΠΈ ΠΏΠΎΠ»ΡƒΡ‡Π°Π΅ΠΌ Π»Π΅Π²ΡƒΡŽ Ρ‡Π°ΡΡ‚ΡŒ строки ΠΎΡ‚ символа, Π½ΠΎ ΡƒΠΆΠ΅ Π±Π΅Π· Π½Π΅Π³ΠΎ.

РСгулярки, ΠΏΠΎΡ‚ΠΎΠΌΡƒ Ρ‡Ρ‚ΠΎ рСгулярно

Как всСгда, господа, Β«Π½Π° Π²Ρ‚ΠΎΡ€ΠΎΠ΅Β» Ρƒ нас рСгулярныС выраТСния. Π˜Ρ… использованиС ΠΊΡ€Π°ΠΉΠ½Π΅ ΡƒΠ΄ΠΎΠ±Π½ΠΎ для Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… Β«Π½Π΅ΡƒΠ΄ΠΎΠ±Π½Ρ‹Ρ…Β» ситуаций. К ΠΏΡ€ΠΈΠΌΠ΅Ρ€Ρƒ, Ссли Π½ΡƒΠΆΠ½ΠΎ ΠΈΠ·Π±Π°Π²ΠΈΡ‚ΡŒΡΡ ΠΎΡ‚ ΠΏΠΎΠ²Ρ‚ΠΎΡ€ΡΡŽΡ‰ΠΈΡ…ΡΡ Π·Π½Π°ΠΊΠΎΠ²:

Π—Π΄Π΅ΡΡŒ примСняСтся функция для Ρ€Π°Π±ΠΎΡ‚Ρ‹ с рСгулярками preg_replace(). Π’ ΠΏΠ΅Ρ€Π΅Π΄Π°Π½Π½ΠΎΠΉ Π΅ΠΉ строкС ΠΎΠ½Π° ΠΈΡ‰Π΅Ρ‚ Π·Π°Π΄Π°Π½Π½Ρ‹ΠΉ символ ΠΈ мСняСт Π΅Π³ΠΎ Π½Π° Π΄Ρ€ΡƒΠ³ΠΎΠΉ. Π’ ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π½ΠΎΠΌ Π²Ρ‹ΡˆΠ΅ ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ Ρ‚Π°ΠΊΠΈΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠΌ ΠΌΡ‹ избавились ΠΎΡ‚ Π½ΡƒΠ»Π΅ΠΉ Π² тСкстС.

ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ Ρ„ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ ΠΊΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΡƒ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. ΠšΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΠ° ΠΏΡ€ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π€ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

БСсплатный курс ΠΏΠΎ PHP ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡŽ

ΠžΡΠ²ΠΎΠΉΡ‚Π΅ курс ΠΈ ΡƒΠ·Π½Π°ΠΉΡ‚Π΅, ΠΊΠ°ΠΊ ΡΠΎΠ·Π΄Π°Ρ‚ΡŒ Π΄ΠΈΠ½Π°ΠΌΠΈΡ‡Π½Ρ‹ΠΉ сайт Π½Π° PHP ΠΈ MySQL с ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ нуля, ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΡ модСль MVC

Π’ курсС 39 ΡƒΡ€ΠΎΠΊΠΎΠ² | 15 часов Π²ΠΈΠ΄Π΅ΠΎ | исходники для ΠΊΠ°ΠΆΠ΄ΠΎΠ³ΠΎ ΡƒΡ€ΠΎΠΊΠ°

ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ Ρ„ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π‘ΠΌΠΎΡ‚Ρ€Π΅Ρ‚ΡŒ ΠΊΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΡƒ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. ΠšΠ°Ρ€Ρ‚ΠΈΠ½ΠΊΠ° ΠΏΡ€ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php. Π€ΠΎΡ‚ΠΎ ΡƒΠ΄Π°Π»ΠΈΡ‚ΡŒ символ Π² ΠΊΠΎΠ½Ρ†Π΅ строки php

Π Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Π²Π΅Π±-прилоТСния Π½Π° PHP

Π‘ΠΎΠ·Π΄Π°ΠΉΡ‚Π΅ Π²Π΅Π±-ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ Π½Π° PHP Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ ΠΏΡ€ΠΈΠ΅ΠΌΠ° ΠΏΠ»Π°Ρ‚Π΅ΠΆΠ΅ΠΉ Π½Π° сайтС

Π˜ΡΡ‚ΠΎΡ‡Π½ΠΈΠΊ

Π€ΡƒΠ½ΠΊΡ†ΠΈΠΈ для Ρ€Π°Π±ΠΎΡ‚Ρ‹ со строками

Для получСния ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΈ ΠΎ Π±ΠΎΠ»Π΅Π΅ слоТной ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅ строк ΠΎΠ±Ρ€Π°Ρ‚ΠΈΡ‚Π΅ΡΡŒ ΠΊ функциями Perl-совмСстимых рСгулярных Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ. Для Ρ€Π°Π±ΠΎΡ‚Ρ‹ с ΠΌΠ½ΠΎΠ³ΠΎΠ±Π°ΠΉΡ‚ΠΎΠ²Ρ‹ΠΌΠΈ ΠΊΠΎΠ΄ΠΈΡ€ΠΎΠ²ΠΊΠ°ΠΌΠΈ посмотритС Π½Π° Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ ΠΏΠΎ Ρ€Π°Π±ΠΎΡ‚Π΅ с ΠΌΠ½ΠΎΠ³ΠΎΠ±Π°ΠΉΡ‚ΠΎΠ²Ρ‹ΠΌΠΈ ΠΊΠΎΠ΄ΠΈΡ€ΠΎΠ²ΠΊΠ°ΠΌΠΈ.

Π‘ΠΎΠ΄Π΅Ρ€ΠΆΠ°Π½ΠΈΠ΅

User Contributed Notes 24 notes

I’m converting 30 year old code and needed a string TAB function:

//tab function similar to TAB used in old BASIC languages
//though some of them did not truncate if the string were
//longer than the requested position
function tab($instring=»»,$topos=0) <
if(strlen($instring)

In response to hackajar yahoo com,

No string-to-array function exists because it is not needed. If you reference a string with an offset like you do with an array, the character at that offset will be return. This is documented in section III.11’s «Strings» article under the «String access and modification by character» heading.

I use these little doo-dads quite a bit. I just thought I’d share them and maybe save someone a little time. No biggy. πŸ™‚

Just a note in regards to bloopletech a few posts down:

The word «and» should not be used when converting numbers to text. «And» (at least in US English) should only be used to indicate the decimal place.

Example:
1,796,706 => one million, seven hundred ninety-six thousand, seven hundred six.
594,359.34 => five hundred ninety four thousand, three hundred fifty nine and thirty four hundredths

/*
* example
* accept only alphanum caracteres from the GET/POST parameters ‘a’
*/

/**
Utility class: static methods for cleaning & escaping untrusted (i.e.
user-supplied) strings.

Any string can (usually) be thought of as being in one of these ‘modes’:

pure = what the user actually typed / what you want to see on the page /
what is actually stored in the DB
gpc = incoming GET, POST or COOKIE data
sql = escaped for passing safely to RDBMS via SQL (also, data from DB
queries and file reads if you have magic_quotes_runtime on—which
is rare)
html = safe for html display (htmlentities applied)

Always knowing what mode your string is in—using these methods to
convert between modes—will prevent SQL injection and cross-site scripting.

This class refers to its own namespace (so it can work in PHP 4—there is no
self keyword until PHP 5). Do not change the name of the class w/o changing
all the internal references.

Example usage: a POST value that you want to query with:
$username = Str::gpc2sql($_POST[‘username’]);
*/

Example: Give me everything up to the fourth occurance of ‘/’.

to: james dot d dot baker at gmail dot com

PHP has a builtin function for doing what your function does,

//
// string strtrmvistl( string str, [int maxlen = 64],
// [bool right_justify = false],
// [string delimter = «
\n»])
//
// splits a long string into two chunks (a start and an end chunk)
// of a given maximum length and seperates them by a given delimeter.
// a second chunk can be right-justified within maxlen.
// may be used to ‘spread’ a string over two lines.
//

I really searched for a function that would do this as I’ve seen it in other languages but I couldn’t find it here. This is particularily useful when combined with substr() to take the first part of a string up to a certain point.

?>

Example: Give me everything up to the fourth occurance of ‘/’.

The functions below:

Are correct, but flawed. You’d need to use the === operator instead:

Here’s a simpler «simplest» way to toggle through a set of 1..n colors for web backgrounds:

Here’s an easier way to find nth.

I was looking for a function to find the common substring in 2 different strings. I tried both the mb_string_intersect and string_intersect functions listed here but didn’t work for me. I found the algorithm at http://en.wikibooks.org/wiki/Algorithm_implementation/Strings/Longest_common_substring#PHP so here I post you the function

A comprehensive concatenation function, that works with array and strings

function str_cat () <
$args = func_get_args () ;

Here is a truly random string generator it uses the most common string functions it will work on anywhere.

/*
Written By James Baker, May 27th 2005

sentenceCase($string);
$string: The string to convert to sentence case.

Converts a string into proper sentence case (First letter of each sentance capital, all the others smaller)

Example Usage:
echo sentenceCase(«HELLO WORLD. THIS IS A CAPITALISED SENTENCE. this isn’t.»);

Returns:
Hello world. This is a capitalised sentence. This isn’t.
*/

If you want a function to return all text in a string up to the Nth occurrence of a substring, try the below function.

(Pommef provided another sample function for this purpose below, but I believe it is incorrect.)

/*
// prints:
S: d24jkdslgjldk2424jgklsjg24jskgldjk24
1: d
2: d24jkdslgjldk
3: d24jkdslgjldk24
4: d24jkdslgjldk2424jgklsjg
5: d24jkdslgjldk2424jgklsjg24jskgldjk
6: d24jkdslgjldk2424jgklsjg24jskgldjk24
7: d24jkdslgjldk2424jgklsjg24jskgldjk24
*/

?>

Note that this function can be combined with wordwrap() to accomplish a routine but fairly difficult web design goal, namely, limiting inline HTML text to a certain number of lines. wordwrap() can break your string using
, and then you can use this function to only return text up to the N’th
.

You will still have to make a conservative guess of the max number of characters per line with wordwrap(), but you can be more precise than if you were simply truncating a multiple-line string with substr().

= ‘Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Pellentesque id massa. Duis sollicitudin ipsum vel diam. Aliquam pulvinar sagittis felis. Nullam hendrerit semper elit. Donec convallis mollis risus. Cras blandit mollis turpis. Vivamus facilisis, sapien at tincidunt accumsan, arcu dolor suscipit sem, tristique convallis ante ante id diam. Curabitur mollis, lacus vel gravida accumsan, enim quam condimentum est, vitae rutrum neque magna ac enim.’ ;

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Pellentesque id massa. Duis sollicitudin
ipsum vel diam. Aliquam pulvinar sagittis felis. Nullam hendrerit semper elit. Donec convallis
mollis risus. Cras blandit mollis turpis. Vivamus facilisis, sapien at tincidunt accumsan, arcu

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Pellentesque id massa. Duis sollicitudin
ipsum vel diam. Aliquam pulvinar sagittis felis. Nullam hendrerit semper elit. Donec convallis
mollis risus. Cras blandit mollis turpis. Vivamus facilisis, sapien at tincidunt accumsan, arcu
dolor suscipit sem, tristique convallis ante ante id diam. Curabitur mollis, lacus vel gravida

I’ve prepared this simple function to obtain a string delimited between tags (not only XML tags!). Anybody needs something like this?.

Get the intersection of two strings using array_intersect

?>

For more advanced comparison you can use array_uintersect as well.

Π˜ΡΡ‚ΠΎΡ‡Π½ΠΈΠΊ

substr

(PHP 4, PHP 5, PHP 7, PHP 8)

substr β€” Π’ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅Ρ‚ подстроку

ОписаниС

Бписок ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ²

Если string мСньшС offset символов, Π±ΡƒΠ΄Π΅Ρ‚ Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π΅Π½Π° пустая строка.

ΠŸΡ€ΠΈΠΌΠ΅Ρ€ #1 ИспользованиС ΠΎΡ‚Ρ€ΠΈΡ†Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π° offset

Если length ΠΏΠΎΠ»ΠΎΠΆΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ, возвращаСмая строка Π±ΡƒΠ΄Π΅Ρ‚ Π½Π΅ Π΄Π»ΠΈΠ½Π½Π΅Π΅ length символов, начиная с ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π° offset (Π² зависимости ΠΎΡ‚ Π΄Π»ΠΈΠ½Ρ‹ string ).

Если ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ length ΠΎΠΏΡƒΡ‰Π΅Π½, Ρ‚ΠΎ Π±ΡƒΠ΄Π΅Ρ‚ Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π΅Π½Π° подстрока, Π½Π°Ρ‡ΠΈΠ½Π°ΡŽΡ‰Π°ΡΡΡ с ΠΏΠΎΠ·ΠΈΡ†ΠΈΠΈ, ΡƒΠΊΠ°Π·Π°Π½Π½ΠΎΠΉ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠΌ offset ΠΈ длящСйся Π΄ΠΎ ΠΊΠΎΠ½Ρ†Π° строки.

ΠŸΡ€ΠΈΠΌΠ΅Ρ€ #2 ИспользованиС ΠΎΡ‚Ρ€ΠΈΡ†Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π° length

Π’ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅ΠΌΡ‹Π΅ значСния

Π’ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅Ρ‚ ΠΈΠ·Π²Π»Π΅Ρ‡Ρ‘Π½Π½ΡƒΡŽ Ρ‡Π°ΡΡ‚ΡŒ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π° string ΠΈΠ»ΠΈ ΠΏΡƒΡΡ‚ΡƒΡŽ строку.

Бписок измСнСний

ΠŸΡ€ΠΈΠΌΠ΅Ρ€Ρ‹

ΠŸΡ€ΠΈΠΌΠ΅Ρ€ #3 Π‘Π°Π·ΠΎΠ²ΠΎΠ΅ использованиС substr()

ΠŸΡ€ΠΈΠΌΠ΅Ρ€ #4 substr() ΠΈ ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ Ρ‚ΠΈΠΏΠΎΠ²

class apple <
public function __toString () <
return «green» ;
>
>

Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π°:

ΠŸΡ€ΠΈΠΌΠ΅Ρ€ #5 НСдопустимый Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½ символов

Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π° Π² PHP 8:

Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ выполнСния Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π° Π² PHP 7:

Π‘ΠΌΠΎΡ‚Ρ€ΠΈΡ‚Π΅ Ρ‚Π°ΠΊΠΆΠ΅

User Contributed Notes 36 notes

For getting a substring of UTF-8 characters, I highly recommend mb_substr

may be by following functions will be easier to extract the needed sub parts from a string:

Coming to PHP from classic ASP I am used to the Left() and Right() functions built into ASP so I did a quick PHPversion. hope these help someone else making the switch

Shortens the filename and its expansion has seen.

### SUB STRING BY WORD USING substr() and strpos() #####

### THIS SCRIPT WILL RETURN PART OF STRING WITHOUT WORD BREAK ###

Drop extensions of a file (even from a file location string)

= «c:/some dir/abc defg. hi.jklmn» ;

?>

output: c:/some dir/abc defg. hi

Hope it may help somebody like me.. (^_^)

PS:I’m sorry my english is too poor. πŸ™

If you want to have a string BETWEEN two strings, just use this function:

$string = «123456789» ;
$a = «12» ;
$b = «9» ;

If you need to parse utf-8 strings char by char, try this one:

Be aware of a slight inconsistency between substr and mb_substr

mb_substr(«», 4); returns empty string

substr(«», 4); returns boolean false

tested in PHP 7.1.11 (Fedora 26) and PHP 5.4.16 (CentOS 7.4)

I wanted to work out the fastest way to get the first few characters from a string, so I ran the following experiment to compare substr, direct string access and strstr:

(substr) 3.24
(direct access) 11.49
(strstr) 4.96

(With standard deviations 0.01, 0.02 and 0.04)

THEREFORE substr is the fastest of the three methods for getting the first few letters of a string.

Here we have gr8 function which simply convert ip address to a number using substr with negative offset.
You can need it if you want to compare some IP addresses converted to a numbers.
For example when using ip2country, or eliminating same range of ip addresses from your website πŸ˜€

$min = ip2no ( «10.11.1.0» );
$max = ip2no ( «111.11.1.0» );
$visitor = ip2no ( «105.1.20.200» );

I created some functions for entity-safe splitting+lengthcounting:

I needed a function like lpad from oracle, or right from SQL
then I use this code :

Just a little function to cut a string by the wanted amount. Works in both directions.

Anyone coming from the Python world will be accustomed to making substrings by using a «slice index» on a string. The following function emulates basic Python string slice behavior. (A more elaborate version could be made to support array input as well as string, and the optional third «step» argument.)

The output from the examples:
c
cd
cdefg
abcd
abcd
efg

I have developed a function with a similar outcome to jay’s

Checks if the last character is or isnt a space. (does it the normal way if it is)
It explodes the string into an array of seperate works, the effect is. it chops off anything after and including the last space.

I needed to cut a string after x chars at a html converted utf-8 text (for example Japanese text like 嬰謰弰脰欰罏).
The problem was, the different length of the signs, so I wrote the following function to handle that.
Perhaps it helps.

Using a 0 as the last parameter for substr().

[English]
I created python similar accesing list or string with php substr & strrev functions.

About of pattern structures
[start:stop:step]

?>

Using this is similar to simple substr.

Π˜ΡΡ‚ΠΎΡ‡Π½ΠΈΠΊ

Π£Π΄Π°Π»Π΅Π½ΠΈΠ΅ Π²Ρ…ΠΎΠΆΠ΄Π΅Π½ΠΈΠΉ ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π½ΠΎΠ³ΠΎ символа ΠΈΠ· ΠΊΠΎΠ½Ρ†Π° строки Π² PHP

БущСствуСт мноТСство Π²Π°Ρ€ΠΈΠ°Π½Ρ‚ΠΎΠ² удалСния всСх ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π½Ρ‹Ρ… символов Π² ΠΊΠΎΠ½Ρ†Π΅ строки. НСкоторыС ΠΈΠ· Π½ΠΈΡ… ΠΎΠ±ΡΡƒΠΆΠ΄Π°ΡŽΡ‚ΡΡ Π½ΠΈΠΆΠ΅:

ИспользованиС Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ rtrim (): эта функция являСтся встроСнной Π² PHP Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠ΅ΠΉ, которая удаляСт ΠΏΡ€ΠΎΠ±Π΅Π»Ρ‹ ΠΈΠ»ΠΈ Π΄Ρ€ΡƒΠ³ΠΈΠ΅ символы (Ссли ΡƒΠΊΠ°Π·Π°Π½Ρ‹) с ΠΏΡ€Π°Π²ΠΎΠΉ стороны строки.

Бинтаксис:

ΠŸΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹: эта функция ΠΏΡ€ΠΈΠ½ΠΈΠΌΠ°Π΅Ρ‚ Π΄Π²Π° ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π°, ΠΊΠ°ΠΊ ΡƒΠΊΠ°Π·Π°Π½ΠΎ Π²Ρ‹ΡˆΠ΅ ΠΈ описано Π½ΠΈΠΆΠ΅:

ΠŸΡ€ΠΈΠΌΠ΅Ρ€: этот ΠΏΡ€ΠΈΠΌΠ΅Ρ€ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡŽ rtrim () для удалСния ‘.’ с ΠΊΠΎΠ½Ρ†Π°.

// ОбъявляСм ΠΏΠ΅Ρ€Π΅ΠΌΠ΅Π½Π½ΡƒΡŽ ΠΈ ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·ΠΈΡ€ΡƒΠ΅ΠΌ Π΅Π΅

$string = «GeeksforGeeks is a best platform. » ;

// Π˜ΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡŽ rtrim () для ΠΎΠ±Ρ€Π΅Π·ΠΊΠΈ
// строка справа

ИспользованиС Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ preg_replace (): эта функция являСтся встроСнной Π² PHP Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠ΅ΠΉ, которая ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ для выполнСния рСгулярных Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ для поиска ΠΈ Π·Π°ΠΌΠ΅Π½Ρ‹ содСрТимого.

Бинтаксис:

ΠŸΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹: Π­Ρ‚Π° функция ΠΏΡ€ΠΈΠ½ΠΈΠΌΠ°Π΅Ρ‚ ΠΏΡΡ‚ΡŒ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ², ΠΊΠ°ΠΊ ΡƒΠΊΠ°Π·Π°Π½ΠΎ Π²Ρ‹ΡˆΠ΅ ΠΈ описано Π½ΠΈΠΆΠ΅:

ΠŸΡ€ΠΈΠΌΠ΅Ρ€ 2: Π’ этом ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ функция preg_replace () ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ для удалСния ‘.’ с ΠΊΠΎΠ½Ρ†Π°.

// ОбъявляСм ΠΏΠ΅Ρ€Π΅ΠΌΠ΅Π½Π½ΡƒΡŽ ΠΈ ΠΈΠ½ΠΈΡ†ΠΈΠ°Π»ΠΈΠ·ΠΈΡ€ΡƒΠ΅ΠΌ Π΅Π΅

$string = «GeeksforGeeks is a best platform. » ;

// Π‘ΠΈΠΌΠ²ΠΎΠ», ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ Π½ΡƒΠΆΠ½ΠΎ Π·Π°ΠΌΠ΅Π½ΠΈΡ‚ΡŒ

// Π˜ΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅ΠΌ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΡŽ preg_replace () для Π·Π°ΠΌΠ΅Π½Ρ‹
// пСрсонаТ

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