str_ends_with

(PHP 8)

str_ends_with — Checks if a string ends with a given substring

Descrizione

str_ends_with(string $haystack, string $needle): bool

Performs a case-sensitive check indicating if haystack ends with needle.

Elenco dei parametri

haystack: The string to search in.
needle: The substring to search for in the haystack.

Valori restituiti

Returns true if haystack ends with needle, false otherwise.

Esempi

Example #1 Using the empty string ''

<?php
if (str_ends_with('abc', '')) {
    echo "All strings end with the empty string";
}
?>

Il precedente esempio visualizzerà:

All strings end with the empty string

Example #2 Showing case-sensitivity

<?php
$string = 'The lazy fox jumped over the fence';

if (str_ends_with($string, 'fence')) {
    echo "The string ends with 'fence'\n";
}

if (str_ends_with($string, 'Fence')) {
    echo 'The string ends with "Fence"';
} else {
    echo '"Fence" was not found because the case does not match';
}

?>

Il precedente esempio visualizzerà:

The string ends with 'fence'
"Fence" was not found because the case does not match

Note

Nota: Questa funzione è binary-safe (gestisce correttamente i file binari)

Vedere anche:

str_contains() - Determine if a string contains a given substring
str_starts_with() - Checks if a string starts with a given substring
stripos() - Trova la prima occorrenza in una stringa senza distinzione tra maiuscole e minuscole
strrpos() - Trova la posizione dell'ultima occorrenza di un carattere in una stringa
strripos() - Trova la posizione dell'ultima occorrenza di una stringa in un'altra indipendentemente dalle lettere minuscole/maiusole
strstr() - Trova la prima occorrenza di una stringa
strpbrk() - Ricerca in una stringa uno qualsiasi dei caratteri di un dato set
substr() - Restituisce parte di una stringa
preg_match() - Riconoscimento con espressioni regolari

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User Contributed Notes 3 notes

down

javalc6 at gmail dot com ¶

1 year ago

In case you are using an older version of PHP, you can define and use the following function:

function endsWith($haystack, $needle) {
    $length = strlen($needle);
    return $length > 0 ? substr($haystack, -$length) === $needle : true;
}

down

Reinder ¶

1 year ago

In PHP7 you may want to use:

if (!function_exists('str_ends_with')) {
  function str_ends_with($str, $end) {
    return (@substr_compare($str, $end, -strlen($end))==0);
  }
}

AFAIK that is binary safe and doesn't need additional checks.

down

divinity76 at gmail dot com ¶

3 years ago

this is the fastest php7-implementation i can think of, it should be faster than javalc6 and Reinder's implementations, as this one doesn't create new strings (but theirs does)

<?php
if (! function_exists('str_ends_with')) {
    function str_ends_with(string $haystack, string $needle): bool
    {
        $needle_len = strlen($needle);
        return ($needle_len === 0 || 0 === substr_compare($haystack, $needle, - $needle_len));
    }
}
?>

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