(PHP 8)
str_starts_with — Checks if a string starts with a given substring
Performs a case-sensitive check indicating if
haystack begins with needle.
haystackThe string to search in.
needle
The substring to search for in the haystack.
Example #1 Using the empty string ''
<?php
if (str_starts_with('abc', '')) {
echo "All strings start with the empty string";
}
?>Il precedente esempio visualizzerà:
All strings start with the empty string
Example #2 Showing case-sensitivity
<?php
$string = 'The lazy fox jumped over the fence';
if (str_starts_with($string, 'The')) {
echo "The string starts with 'The'\n";
}
if (str_starts_with($string, 'the')) {
echo 'The string starts with "the"';
} else {
echo '"the" was not found because the case does not match';
}
?>Il precedente esempio visualizzerà:
The string starts with 'The' "the" was not found because the case does not match
Nota: Questa funzione è binary-safe (gestisce correttamente i file binari)