Statement on glibc/iconv Vulnerability

    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

    up
    6
    Reinder
    10 months 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.
    up
    6
    javalc6 at gmail dot com
    10 months 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;
    }
    up
    6
    divinity76 at gmail dot com
    2 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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