(PHP 7)
Check if code point is permissible as the first character in a Java identifier
public static bool IntlChar::isJavaIDStart ( mixed $codepoint )
Determines if the specified character is permissible as the start of a Java identifier.
In addition to IntlChar::isIDStart(), TRUE
for characters with general categories "Sc" (currency symbols) and "Pc" (connecting punctuation).
Parameters:
codepoint
The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")
Returns:
Returns TRUE
if codepoint
may start a Java identifier, FALSE
if not.
Examples:
Testing different code points
<?php var_dump(IntlChar::isJavaIDStart("A")); var_dump(IntlChar::isJavaIDStart("$")); var_dump(IntlChar::isJavaIDStart("\n")); var_dump(IntlChar::isJavaIDStart("\u{2603}")); ?>
The above example will output:
bool(true) bool(true) bool(false) bool(false)
See also:
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