IntlChar
PHP Manual

IntlChar::isJavaIDStart

(PHP 7)

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

Descrição

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

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).

Parâmetros

codepoint

Um codepoint integer (por exemplo 0x2603 para U+2603 SNOWMAN), ou um caracter codificado como uma string UTF-8 (exemplo "\u{2603}")

Valor Retornado

Returns TRUE if codepoint may start a Java identifier, FALSE if not.

Exemplos

Exemplo #1 Testando codepoints diferentes

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

O exemplo acima irá imprimir:

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

Veja Também

IntlChar
PHP Manual