IntlChar::isJavaIDStart
IntlChar::isJavaIDStart
(PHP 7)
IntlChar::isJavaIDStart — Check if code point is permissible as the first character in a Java identifier
Description
public static bool IntlChar::isJavaIDStart ( mixed $codepoint )
Determines if the specified character is permissible as the start of a Java identifier.
In addition to IntlChar::isIDStart(), TRUE for characters with general categories "Sc" (currency symbols) and "Pc" (connecting punctuation).
Parameters
codepoint
The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")
Return Values
Returns TRUE if codepoint may start a Java identifier, FALSE if not.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::isJavaIDStart("A")
var_dump(IntlChar::isJavaIDStart("$")
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
- 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
← IntlChar::isJavaIDPart
IntlChar::isJavaSpaceChar →
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