IntlChar::isJavaIDStart

(PHP 7)

IntlChar::isJavaIDStart — Check if code point is permissible as the first character in a Java identifier

Descrierea

public static IntlChar::isJavaIDStart ( mixed $codepoint ) : bool

Determines if the specified character is permissible as the start of a Java identifier.

In addition to IntlChar::isIDStart(), true for characters with general categories "Sc" (currency symbols) and "Pc" (connecting punctuation).

Parametri

codepoint: Valoarea codepoint de tip integer (de ex. 0x2603 pentru U+2603 SNOWMAN) sau caracterul codificat ca string în UTF-8 (de ex. "\u{2603}")

Valorile întoarse

Returns true if codepoint may start a Java identifier, false if not.

Exemple

Example #1 Testarea diferitor code points


<?php
var_dump(IntlChar::isJavaIDStart("A"));
var_dump(IntlChar::isJavaIDStart("$"));
var_dump(IntlChar::isJavaIDStart("\n"));
var_dump(IntlChar::isJavaIDStart("\u{2603}"));
?>

Exemplul de mai sus va afișa:

bool(true)
bool(true)
bool(false)
bool(false)

A se vedea și

IntlChar::isIDStart() - Check if code point is permissible as the first character in an identifier
IntlChar::isJavaIDPart() - Check if code point is permissible in a Java identifier
IntlChar::isalpha() - Check if code point is a letter character

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